Home
Aplusclick Applied Math Questions
One pack has 4 pencils. Another pack has 6 pencils. How many pencils are . . .
Tom and Anna had 6 apples. They ate two apples. How many apples do they have . . .
Which of the following is equal to five kilograms?
There are eight legs. How many horses are there?
Select the group that has more apples.
How many birds do you see in all?
Which animal is the second from the left?
How many fingers and thumbs do you have on your hands?
How many different animals are there?
Jim threw eight dimes. How many coins landed heads up?
How many matches are there?
Find the longest vehicle.
Find the shortest vehicle.
One pack of pencils has 3 pencils. Another pack has 6 pencils. How many . . .
One pack of pencils has 8 pencils. Another pack has 2 pencils. How many . . .
One pack of pencils has 4 pencils. Another pack has 5 pencils. How many . . .
One pack of pencils has 4 pencils. Another pack has 3 pencils. How many . . .
Anna had 6 apples. She ate an apple. How many apples does she have left?
Anna had 6 apples. She ate three apples. How many apples does she have left?
Anna had 6 apples. She ate four apples. How many apples does she have left?
Anna had 6 apples. She ate five apples. How many apples does she have left?
Which of the following is equal to four kilograms?
Which of the following is equal to six kilograms?
There are eight legs. How many heads and tails are there?
Select the group that has less apples.
How many birds and animals do you see in all?
Which animal is the third from the left?
Which animal is the fourth from the right?
Which animal is the second from the right?
Which animal is the third from the right?
How many fingers and thumbs do you have on your hand?
How many birds are there?
Anna threw eight dimes. How many coins landed tails up?
Which digital clock time is closer to noon?
How many ropes are there in the picture?
Which is the fourth number from the right?
Which number required the least paper?
There were 8 sheep in a herd, and 5 got lost. How many were left?
How many blue squares are there in the picture?
How many times did I fold the paper?
This Pinocchio toy has a wooden head, body, legs and arms. How many wooden . . .
How many more eggs can you put into the package?
Anna has six pennies. Which toy can she buy?
Select the picture that shows that the right part is bigger than the left part.
Find the picture of the heaviest set of weights.
About how many screws placed in a line are as long as the screwdriver?
Which sand pie has three equal parts?
How many green tiles are there?
Anna has sixteen pennies. Which toy can she buy?
Select the picture that shows that the left part is bigger than the right part.
Which sand pie has four equal parts?
Alex buys three bags of marbles. The marbles are priced differently. How . . .
How many red numbers are there?
How many city blocks are there between River street and State street on the . . .
If yesterday was Wednesday, what day is the day after tomorrow?
Which brick is the second from the right?
I am looking for house 221. Which way should I go?
I am looking for house 521. Which way should I go?
How many houses are there?
Which job does not require math?
Which is the fifth button on the fourth line ?
From which state does the vehicle registration plate include the greatest . . .
How many white tiles are there?
How many chairs does the picture show?
Which number will be served next?
A kitten ate 123 grams of food on Saturday and 321 grams of food on Sunday. . . .
A honeycomb is a mass of hexagonal wax cells built by honeybees in their nests. . . .
Kevin buys three bags of marbles. The marbles are priced differently. How . . .
How many fruits are outside the semi-circle?
The top screw is 10 centimeters long. The bottom screw is 6 centimeters long. . . .
What is the largest number written here in the picture?
How many city blocks are there on the city map?
A dime is worth ten cents. You can count dimes by counting by 10's. Count . . .
How many Euros are there?
What time will the clock show in 35 minutes?
Which number has been already served?
A kitten ate 120 grams of food on Saturday and 320 grams of food on Sunday. . . .
A kitten ate 320 grams of food on Saturday and 230 grams of food on Sunday. . . .
Kevin buys two bags of marbles. The marbles are priced differently. How . . .
Kevin buys three bags of marbles. The marbles are priced differently. How . . .
The top screw is 12 centimeters long. The other screw is 7 centimeters long. . . .
A dime is worth ten cents. You can count dimes by counting by 10's. Count . . .
Brad's hockey training started at 2:30. It took 1 hour and a half to play. . . .
Which number has been already served?
Anna arrived at the swimming pool at 9:00 A.M. and left at 1:00 P.M. How . . .
There are ten apples in each bag. Which set would have exactly thirty-one . . .
Six apples are worth three dimes. How much are 5 apples worth? Penny = 1 . . .
If tomorrow is Monday, what day was yesterday?
At Jane's birthday party, all guests gave her a present. She also gave a small . . .
How many objects are there in the picture?
How many pens are there?
There are three of us here and there are 18 pancakes. What is a fair share?
We want to come off the Interstate at exit 42 and we have just passed exit 38. . . .
When did the Olympic Games in Beijing take place?
Forty young people participated in a competition. Sixteen of them were girls. . . .
Brad's hockey training started at 2:30. It took 2 hour to play. What time . . .
Which number will be served next?
Anna arrived at the swimming pool at 9:00 A.M. and left at 2:00 P.M. How . . .
Which temperature is shown on the thermometer?
There are ten apples in each bag. Which set would have exactly thirty apples?
Along State Street, I am three city blocks from the nearest bus stop and four . . .
A farmer bought 3 cows for $3000 and sold them for $4000. He bought them . . .
Five apples are worth a quarter. How much are 6 apples worth? Penny = 1 . . .
Eugenia is learning to play the piano. She practices 45 minutes a day on . . .
Alex is framing a small flower box. He wants the box to be 80 centimeters . . .
A team has $90.00 to buy balls. One ball costs $7. The team gets every fifth . . .
Anna has two $100 notes. She also has eleven $10 notes and nine $1 notes. . . .
How many toys cost more than one dollar?
Three large rods and five small rods fit exactly inside this rectangular box. . . .
Which area of the kite is the largest?
What time will the analog wristwatch show in 45 minutes?
Anna arrived at the swimming pool at 9:00 A.M. and left at noon. How many . . .
A peasant bought a cow for $3000 and sold her for $4000. He bought her back . . .
A farmer bought 3 cows for $3600 and sold them for $4000. He bought them . . .
A farmer bought 3 cows for $3000 and sold them for $3500. He bought them . . .
A farmer bought 3 cows for $3300 and sold them for $3500. He bought them . . .
Eugenia is learning to play the piano. She practices 45 minutes a day on . . .
A team has $100. One ball costs $8. The team gets every sixth ball for free. . . .
A team has $96. One ball costs $9. The team gets every sixth ball for free. . . .
Anna has three $100 notes. She also has six $10 notes and eleven $1 notes. . . .
Anna has three $100 notes. She also has twelve $10 notes and eleven $1 notes. . . .
Anna has two $100 notes. She also has twelve $10 notes and ten $1 notes. . . .
How much money would you need to buy the two most expensive toys?
John and his sister collect postage stamps. He has 777 postage stamps, and his . . .
What needs to be added to 5 dollars and 45 cents to make 10 dollars?
What time is 37 minutes before noon?
What time will the clock show in 65 minutes?
A sign shows how much time it takes to walk from Montheron Abbey to different . . .
A math teacher has 21 students in her class. Anna, Bill, and Craig are asleep, . . .
Which one has the largest maximum size?
John paid $28 for the cacao. He gave the seller $50. Approximately how much . . .
If I spin the spinner once and it makes three and a half turns, on which sector . . .
What is less than 3 quarters of a dollar?
Which time is shown on the clock?
Gerry's class needs more pencils. Anna brought 2, Bill brought 3, and Jane . . .
There are 44 students in a camp. How many iPads does the camp need if two . . .
How many tiles fit in the area inside of the path with square tiles?
Beijing is the first city to host both Summer (2008) and Winter (2022) Olympic . . .
There are cows and farmers in a field. If Gerry counts 22 heads and 66 legs, . . .
Benny Bunny is one year and five months old. How many months old is Benny . . .
If one apple costs 17p, how much do four apples cost?
John and his sister collect postage stamps. He has 777 postage stamps, and his . . .
What needs to be added to 5 dollars and 55 cents to make 10 dollars?
Berlin is +6
o
C. London is +3
o
C. Moscow is . . .
Ben's grandmother asked him to go to the store to buy strawberries. He only . . .
Alex has started painting a fence. By twelve o'clock, he has painted this . . .
Mr. Johnson has a large piece of land, as pictured here. He divided the land . . .
At a local school, students sold post cards for a fundraiser. The bar graph . . .
The total land area of the United States is 9,172,389 square kilometers. What . . .
Which is the best estimate of the total cost of these toys?
The price of an apple is 31 cents. The price of a tangerine is 40 cents. . . .
John had $89 in his piggy bank. He added $10. How could he split the . . .
A team has $90.00 to buy balls. One ball costs $7. The team gets every fifth . . .
What time is 137 minutes before noon?
A clock shows this time. How long is it from this time until 11am? . . .
A sign shows how much time it takes to walk from Montheron Abbey to different . . .
How many streets are there on the map?
John ate a piece of a pizza and left the rest for his friends, Jim and Jack. . . .
Eugenia is learning to play the piano. She practices 45 minutes a day on . . .
If one apple costs 19c, how much do four apples cost?
John and his sister collect postage stamps. He has 567 postage stamps, and his . . .
Which is the best estimate of the total cost of the two most expensive toys?
The figure shows the diagram of a living room floor. The walls are shaded. . . .
What time will the clock show in 65 minutes?
I saw the lightning strike the ground near the far side of the lake and heard a . . .
Your dad pays you $144 a day for the 6 seconds that you take to wash your . . .
In April a car is driven 22 miles, 23 miles, 38 miles, and 37 miles. What is . . .
A 165 R15 radial tire costs $59.95 and the Federal Excise Tax is $2.39. What . . .
At the next stop, 3 students get off while 5 get on. If initially there were . . .
A sign shows how much time it takes to walk from Montheron Abbey to different . . .
What is the speed of a ball that flies 48 meters in 8 seconds?
Alex painted a fence. He completed 3/4 of the work on Monday. On Tuesday, he . . .
Gerry gets $5 each week for his pocket money. Jane gets double that amount. . . .
Jane paid six dollars and thirty cents for 9 eggs. How much did each egg . . .
If each coin has a value of 50 centimes, how much money is there?
How many dimes are worth 22 quarters? A quarter dollar, or quarter, is a U.S. . . .
A mile long train travels 2 miles a minute. How much time does it take for . . .
There are 555 students in a school. How many desks does the school need if . . .
A puzzle used to cost $49.95 but now the price is $33.45. How much is the . . .
What is the least and the most number of fathers the girls might have?
What is the minimum number of people needed in a boat to be certain that at . . .
A puppy sleeps a total of 84 hours per week of 7 days. On average, how much . . .
Jane has $3.50 in dimes. How many dimes does she have? A dime is a . . .
If Edgar cleans his teeth twice per week and changes the toothbrush every time . . .
At a shop, the cost for two cereal bars and three small bottles of milk is 5.50 . . .
The number of hours left today is half of the number of hours already passed. . . .
The figure shows the diagram of a living room floor. The walls are shaded. . . .
We want to buy 120 kilograms of potatoes. Which is the better purchase?
There are 1.52 US dollars to the UK pound. How many dollars would you . . .
The original price of an umbrella was $16. What was the price of the umbrella . . .
Ann went to a movie. The movie started at 11:55 A.M. and lasted 117 minutes. . . .
At 11:30 A.M. Alex started painting a fence. By noon, he had painted this . . .
Ben's grandmother asked him to go to the store to buy at least 1000 grams of . . .
The larger counter (circle) shows seconds. The smaller counter (circle) shows . . .
Ten percent of a $32.00 electricity bill is tax. How much is the tax?
A dozen balloons cost 48 cents. How many balloons cost 1 dollar?
A farmer normally sells sheep for $200 each. This winter, the farmer is . . .
Three boys put $4, $5, and $6 in a piggy bank. How can they split the money . . .
The distance between two buoys can be anything between 8 and 10 meters, even . . .
Two cyclists race on a circular track. The first can ride around the track in . . .
The boxing ring is 6 meters in length on each side between the ropes. How . . .
A county hospital proudly announces "A new baby is born every 20 minutes, 24 . . .
An amoeba is a shapeless unicellular organism. An amoeba propagates by simple . . .
Four hundred dried cocoa beans weigh 1 pound or 0.45kg. What is the weight . . .
Jim is happy this evening. How many minutes to midnight, do you reckon it is?
Berlin is +6
o
C. London is +3
o
C. Moscow is . . .
Which set of baskets is the least expensive?
Mr. Johnson has a large piece of land, as pictured here. He divided the land . . .
John had $89 in his piggy bank. He added $32. How could he split the money . . .
A team has $105 to buy balls. One ball costs $8. The team gets every sixth . . .
At 11:00 A.M. Alex started painting a fence. By noon, he had painted this . . .
How many quarters are there in 7 and a half dollars?
Tom drove his car 150 kilometers in 4 hours. He continued to drive at double . . .
What is the largest number of pizza pieces I can obtain by making three . . .
Which of the following is equal to 3 quarters of a million dollars?
How many more houses are there straight on than to the left?
Find W.
An ostrich runs at an average 40 mph for 12 minutes. How far is it? PS: mph . . .
How many minutes are left to midnight?
If Jane drinks a glass of milk during every school lunch, how much milk does . . .
Alex and Bill have been best friends for three years. They plan to keep the . . .
If the sum of Evguenia and Olga's ages is 44 now, what will the sum of their . . .
If a pen costs $1.69 and a pencil costs $0.79, which of the following is the . . .
If Gerry has $5 in dimes and Jane has the same amount in quarters, how many . . .
If it rains at midnight in London, what are chances that it will be sunny in 72 . . .
Martin has 2,000 bills, 2,000 Czech korunas each. How rich is he if $1 is . . .
Gerry has 1 penny, 2 nickels, and 3 dimes. How many different sums of money . . .
If I convert all the letters in this sentence to UPPER CASE, in what language . . .
The largest denomination of currency ever printed by the Bureau of Engraving . . .
According to
Time is money If one minute is worth $0.5 (50 cents), how much is one . . .
Gasoline costs $1.99 per gallon. How much will it cost Gerry to fill his . . .
A granny’s dozen is one more than a dozen. Gerry's granny prepared . . .
How many quarters are there in 3 and a half dollars?
Tom drove his car 200 kilometers in 4 hours. He continued to drive at double . . .
John paid $60 for 8 CDs. All CDs cost the same price, but 2 of them were on . . .
John is making a rectangular flower box. He is using wood that is 10 . . .
To complete one set of pipe installations, Bob the plumber needs the following . . .
The university's budget was cut from $2.2 million to $2,000 thousand. What . . .
Tim placed an order for a book. If the order is below $40, then the minimum . . .
Our school will have to pay $24 for 15 dozen pencils. How much will the . . .
The total price of an apple and a tangerine is 39 cents. The total price of 2 . . .
A hockey team lost every fifth game and won 6 more than it lost. There are no . . .
If eight people can stand on a square meter of carpet, how many of them can . . .
The left clock runs slower at a rate of 6 minutes per hour. The second clock . . .
There are 12 men on a basketball team, and in a game 5 of them play at any one . . .
Anna earned $72. She gives her mother 1/3 of this amount and spends 1/4 of the . . .
John started a business in which he earned $1 on the first day, $5 on the . . .
If you would like to give a tip of 15% and you have no change, without using a . . .
What time is 43210 seconds before midnight?
The picture shows a supermarket bill with 22 items. What is maximum mistake I . . .
I want to build a fence around a garden. The perimeter of the garden is 12 . . .
How many different nonzero weights can you measure with a balance and three . . .
The picture shows the diagram of a living room floor with four doors. The . . .
A stadium security system consists of two stages. In the first stage, 60% of . . .
The picture shows four supermarket lines viewed from above. The numbers are . . .
The picture shows the floor plan of a house. Which room has the largest . . .
In 2010, the population of the Italian capital Rome was 2,761,477 and the . . .
A watch loses 3.5 seconds and another watch gains 2.5 seconds every 24 hours. . . .
A hammer and a nail cost $21. If the hammer cost $20 more than the nail, how . . .
The number of hours left today is a third of the number of hours already . . .
We want to buy 120 kilograms of potatoes. Which is the better purchase?
There are 1.58 US dollars to the UK pound. How many dollars would you . . .
The original price of an umbrella was $20. What was the price of the umbrella . . .
Ann went to a movie. The movie started at 11:55 A.M. and lasted 127 minutes. . . .
At 11:20 A.M. Alex started painting a fence. By noon, he had painted this . . .
Find a set with the best value (weight) for money.
I paid a total of $121 for a toy train, including 10% tax. How much does the . . .
A dozen balloons cost 60 cents. How many balloons cost 1 dollar?
A dozen balloons cost 30 cents. How many balloons cost 1 dollar?
A farmer normally sells sheep for $200 each. This winter, the farmer is . . .
Three boys put $7, $8, and $9 in a piggy bank. How can they split the money . . .
To complete one set of pipe installations, Bob the plumber needs the following . . .
If six people can stand on a square meter of carpet, how many of them can stand . . .
The cost of a party is $66 plus $6 per person, so what would be the cost of a . . .
The drama club is selling tickets to a play for $9 per ticket. The cost to . . .
Apples are sold in bags of four that cost $5 per bag, or bags of six that cost . . .
A class picnic is estimated to cost $232. The boys agreed to contribute $1 more . . .
A team played 80 games and won 40 percent of them. It drew 12 games. How . . .
The distance between two buoys changes from 6 to 10 meters. What is the . . .
I have ten bills consisting of $5 and $10 bills. The total amount of money is . . .
The boxing ring is 18 ft in length on each side between the ropes. How much . . .
Four hundred dried cocoa beans weigh 1 pound. What is the weight of a bag . . .
A piece of soap is 50x40x100 mm. A layer of 0.125 mm disappears every time I . . .
I place 14 chairs along the walls in an empty rectangular room. The number of . . .
Which of these choices is the size of a picture with the same perimeter as a . . .
The button "8" on my calculator is broken. I replace the button by . . .
How many stars with a side length of 4 cm can I cut and bend from a wire that . . .
Metro Card prices: a single ride is $2.5 and a 7 day Metro Card costs $29. . . .
John is the proud owner of a race car. In a month he uses 2 gallons, 3 . . .
There are 14,600,000 tiles on the roofs of the old Swiss town of Murten. How . . .
An automobile salesperson earns a 5% commission on all sales. How much will . . .
The thickness of a dollar bill is close to 0.0001 m and the height of a . . .
A couple has 81 coins to share between them. How many coins will the man get . . .
I require a passcode that uses 4 different numbers. I chose the shortest . . .
I require a passcode that uses 4 different numbers. I chose the largest . . .
If Jane walks to school in the morning and then rides the school bus back, it . . .
Gerry bought ice cream cones for Jane, her friend Anna and for himself for . . .
After a 2-month tennis course, three friends recorded their weight loss. . . .
Anna's recipe needs 3/4 cup of sugar and 7/4 cup of wheat. How many cups in . . .
Gerry and Jane were supposed to meet at 11:50. If Gerry arrived 12 minutes . . .
If today is Monday, what day of the week was 100 days ago?
It costs $19 a week to feed Benny. How much money would it cost to feed him . . .
What is greater? A quarter is a U.S. coin worth 25 cents.
In which team does a person get the greater amount of the healthy food if they . . .
There is an equal amount of money in pennies, nickels, dimes, and quarters. . . .
If today is a Sunday, then what day will it be one year later? 1 year = 365 . . .
Gerry exchanged $82 for an equal number of pennies, nickels, dimes, and . . .
Gerry bought Benny Bunny for $9, sold it for $8, bought it back for $7, then . . .
A train departs from Lausanne to Zurich with 10 seconds delay and another one . . .
Passengers have a maximum allowable weight for their luggage. They are then . . .
A piece of metal wire measures 2/3 m. Without the use of any other measuring . . .
In order to test the Archimedes Principle, Sasha put a Lead weight inside a . . .
When it is 11am in Geneva (Switzerland) it is 5am in New York (USA). The flying . . .
The boy dreams of being an astronaut. How long does he need to study and . . .
Estimate the cost of a carpet 15 yards long and 12 yards wide with the . . .
Estimate the number of strawberries in the box if we see only a third of them.
6 boys and 12 girls attend prom at the Cool High School. If each of the boys . . .
Time is money If one minute is worth $24,000 for Bill Gates, how many . . .
Forty cows drink forty-two hundred gallons of water each week. How many . . .
You are making a bank deposit of $780. You have an equal number of $50s, $10s . . .
The cost of a party is $55 plus $5 per person, so what would be the cost of a . . .
Americans measure the temperature in
o
F. Europeans measure the . . .
Jim bought a laptop at 25% off the regular price of $500.00. He also bought a . . .
A new road is being constructed to re-route its flow around the exterior of a . . .
The drama club is selling tickets to a play for $8 per ticket. The cost to . . .
Jack went for a drive. Before he left, he noticed that the gas tank was 3/4 . . .
A $125 clock is on sale for $75. What is the percent change in price?
John wants to build a wooden fence around his garden. He is considering four . . .
A city of 1,111,000 residents had a total of 111 car accidents in 1999. There . . .
A particular stock is valued at $40 per share. The value increases by 25% and . . .
Which coupon should Bob use to save the most money on 2 hammers originally . . .
Three friends visited a restaurant where everything costs $0.50. They ordered . . .
A stadium security system consists of two stages. In the first stage, 60% of . . .
Sixty carpenters and forty plumbers work together. The average daily rate of a . . .
There are only four toys left in a shop. How many different purchases can be . . .
There are 140 cars in a village of 30 families. Each family has either 4 or 5 . . .
Apples are sold in bags of four that cost $5 per bag, or bags of six that cost . . .
John buys shares in the stock market for $1000. He sells the shares when the . . .
A girl drives from home to her school at an average speed of 90 kilometers per . . .
A 1-meter tall fence is parallel to a very high wall 1 meter away. What is . . .
A 100-liter vessel is full of a mixture of juice concentrate and water, in . . .
A stadium contains 20,000 seats. At a match, 25% of the seats remain empty. . . .
Normal milk has 35 grams of fat per liter. Fat free milk has 5 grams of fat . . .
A car that originally sold for $40,000 depreciates at a rate of 50% per year. . . .
A class picnic is estimated to cost $212. The boys agreed to contribute $1 more . . .
A team played 120 games and won 40 percent of them. It drew 20 games. How . . .
Four children Addy, Brady, Cady and Dendy started at the same point S and . . .
The space between these green square tiles is filled by grout. Its width is . . .
January 1st, 2012 was a Sunday. 2012 is a leap year and therefore contains one . . .
Enclosed is a lamb using a 4-crosspiece log fence. What is the smallest . . .
John is making a rectangular flower box. He is using wood that is 10 centimeters . . .
Four towns are situated at the corners of a square. The government decided . . .
I have eight bills consisting of $5 and $10 bills. The total amount of money . . .
John deposited 400 dollars at 40% interest compounded annually. Estimate his . . .
What is the total worth of the $1 bills which are consecutively numbered from . . .
Jim stayed for 18,000 seconds at a zoo. At what time did he leave if he . . .
A man and his equipment weigh 180kg on Earth. If he takes the same set of . . .
A gardener increased the length of his rectangle-shaped garden by 10% and kept . . .
A race car is constructed from ultra-lightweight materials. The car weighs . . .
I bought a 20'' laptop with the ratio of the screen width to the height 4 : 3. . . .
152 Garfield Show episodes were produced in 2009 - 2012. Each episode is 22 . . .
John paid $90 for 8 CDs. All CDs cost the same price, but 2 of them were on . . .
John is making a rectangular flower box. He is using wood that is 10 . . .
The university's budget was cut from $2 million to $1800 thousand. What . . .
Tim placed an order for a book. If the order is below $40, then the minimum . . .
A school pays $32 for 12 dozen pencils. How much will the school have to pay . . .
The total price of an apple and a tangerine is 39 cents. The total price of 2 . . .
A hockey team lost every fifth game and won 3 more than it lost. There are no . . .
If six people can stand on a square meter of carpet, how many of them can stand . . .
The left clock runs slower at a rate of 5 minutes per hour. The second clock . . .
There are 15 men on a basketball team, and in a game 5 of them play at any one . . .
There are 16 men on a basketball team, and in a game 5 of them play at any one . . .
Anna earned $72. She gives her mother 1/4 of this amount and spends 1/5 of the . . .
Anna earned $72. She gives her mother 2/15 of this amount and spends 1/6 of . . .
John started a business in which he earned $1 on the first day, $4 on the . . .
A $120 watch is on sale for $66. What is the percent change in price?
A $120 watch is on sale for $84. What is the percent change in price?
Which has the least volume?
The original price of an umbrella was $15. What was the price of the umbrella . . .
A food stand buys ice cream cones in packages of 28 and cartons of 12. What . . .
600 employees work for company XYZ, where the ratio of men to women is 7 to 5. . . .
Anna is a member of Greenland Velo's race team. This summer, she has won only . . .
A lottery has one $8000 prize, four $2000 prizes, and eight $500 prizes. The . . .
The desired tip is 15% and you have no change. Without using a calculator, . . .
What time is 4321 seconds before midnight?
You participate in the 191-km stage of the Tour de France. One second before . . .
How many minutes before midnight does a 24-hour digital clock show the same . . .
I place 11 chairs along the walls in an empty rectangular room. The number of . . .
A piece of wood is to be sawed into 3 smaller similar pieces. If a cut . . .
Seven apricots were dried and no longer contain water. If the fruits . . .
How high is a $50,000 stack of $1 bills, given that the thickness of 100 bills . . .
Find the longest rope.
I saved $5 on buying coconuts on sale. If I spent $20 on the coconuts, what . . .
I want to rearrange the logs in the following manner: 8 logs on the bottom row, . . .
I paid $50 when I filled the tank of my car, at which stage the odometer said . . .
People breathe 20 times a minute. Estimate how many times a person breathes . . .
Mary puts $800 in a bank account. Each year the account earns 1% simple . . .
The Tsar Bell weighed 202 tons (like three battle tanks) before a huge slab (12 . . .
John plans to go by bus and to walk back, so if the bus goes at the rate of . . .
What is the minimum number of pizzas that a class of 21 students should buy if . . .
Two trains are 1 kilometer apart on a single track railway line. They set off . . .
John's tent is 1.5 m high, 2 m long, and 1.5 m wide. How much water will fall . . .
The diagram shows the lowest point and the highest point of our planet. What . . .
The knights gallop 100 m in 10 seconds. There are 1000 m in 1 km. Would the . . .
Jim's route must start and end at his home. He wants to visit at least 3 . . .
Bob's age is between 40 and 60 and it is a multiple of 5. Next year, his age . . .
Gerry drove a total of 420 miles in 6 hours. How many hours did he drive . . .
How many minutes elapse between 9:10 a.m. and 1:45 p.m. ?
The community library fines 20 cents per overdue day of the first week and 50 . . .
What is one-hundred percent of two hundred percent of three hundred dollars?
Gerry adds $5 to his piggy bank every week. How much money will he get in . . .
Kate was born on December 31st, yet her birthday always falls in the summer. . . .
Estimate how many cubes there are in the pyramid.
Gerry arrived in the Murtenhof Hotel on January 28th in the afternoon and left . . .
A pedestrian crosswalk consists of black and white stripes each 0.4 m wide. . . .
Leslie Green asks: A road traffic junction has no provision for pedestrians. . . .
The King of a far off land has just had the ballroom lights in his palace . . .
Leslie Green asks: You accidentally knock an almost full opened can of . . .
Which has the most volume?
If a $600 computer is on sale for a 20% discount, what is the sale price?
It costs $24 to paint a cube. Before painting, we divide the cube into two . . .
The original price of an umbrella was $16. What was the price of the umbrella . . .
A food stand buys ice cream cones in packages of 8 and cartons of 14. What . . .
500 employees work for company XYZ, where the ratio of men to women is 6 to 4. . . .
Anna is a member of Greenland Velo's race team. This summer, she has won only . . .
A $10 million lottery pot is divided into equal increments over 20 years. The . . .
If three students eat three apples in 33 seconds, how long will it take nine . . .
A 2-meter wide path is constructed around the outside of a rectangular garden . . .
A lottery has one $8000 prize, two $2000 prizes, and twelve $500 prizes. The . . .
Are you a good bargain shopper? Find the best deal.
The picture shows four supermarket lines, viewed from above. The numbers are . . .
Which spring wire is longest?
Apples are sold in bags of eleven that cost $11 per bag, or bags of nine that . . .
Which is the side view of the 3-D shape?
The area of the white cross is 45% of the area of the square flag. Five white . . .
Estimate the length of the blue cord.
The picture shows an example of the Aztec code for Wikipedia. Estimate the . . .
A jigsaw puzzle consists of 250 identically shaped pieces to spread on a plane. . . .
I completely covered a one square meter area with $100 bills without any . . .
Which of the following collections of round pizzas has the largest area?
A chain with 3 links is 10 cm long. A chain made from 5 links of the same . . .
All sizes can be 1% bigger or smaller compared with the initial design sizes. . . .
I can buy gold bars in boxes of 25 kilograms, 45 kilograms, 65 kilograms, and . . .
In a survey of customers, 2/3 of the female clients and 3/4 of the male clients . . .
Americans measure the temperature in
o
F. Europeans measure the . . .
Jim bought a laptop at 25% off the regular price of $500.00. He also bought a . . .
The drama club is selling tickets to a play for $9 per ticket. The cost to . . .
A $160 watch is on sale for $96. What is the percent change in price?
A particular stock is valued at $40 per share. The value increases by 25% and . . .
Three friends visited a restaurant where everything costs $0.50. They ordered . . .
A stadium security system consists of two stages. In the first stage, 70% of . . .
Sixty carpenters and forty plumbers work together. The average daily rate of a . . .
There are 130 cars in a village of 30 families. Each family has either 4 or 5 . . .
John buys shares in the stock market for $1000. He sells the shares when the . . .
A girl drives from home to her school at an average speed of 50 miles per hour, . . .
A 100-liter vessel is full of a mixture of juice concentrate and water, in . . .
A 100-liter vessel is full of a mixture of juice concentrate and water, in . . .
A stadium contains 20,000 seats. At a match, 20% of the seats remain empty. . . .
Normal milk has 36 grams of fat in a bottle. Fat free milk has 6 grams of . . .
A car that originally sold for $40,000 depreciates at a rate of 50% per year. . . .
John put $10,000.00 in a savings account at an annual interest rate of 5%. He . . .
In a basketball tournament, a team is eliminated after a defeat. There can be . . .
A class picnic is estimated to cost $192. The boys agreed to contribute $1 more . . .
A total of 321 employees work for company XYZ and two thirds of them are men. . . .
A man and his equipment weigh 180kg on Earth. If he takes the same set of . . .
The picture shows a simplified statement of income for company ABC in millions. . . .
A race car is constructed from ultra-lightweight materials. The car weighs . . .
I bought a 15''-screen laptop with a screen width to height ratio of 4 : 3. . . .
To unlock his mobile device, Alex must enter the four different digits of his . . .
Anna has 8 biscuits, Bill has 6, and Cindy has 1. They share them out equally. . . .
What is the minimum number of cuts needed to cut a log into 24 equal pieces? . . .
The picture shows the rectangular floor plan of the first level of a house. . . .
A revolving door with three wings makes 5 complete rotations in a minute. . . .
On a trip, Evguenia cycled 5 km in the first 15 minutes and then 4 km in the . . .
Mr. Smith bought glasses for all members of his family including animals and . . .
Jim can eat a 10-inch pizza in 16 minutes. How long will it take for Jim to . . .
You have 3 coins. One is counterfeit and is either heavier or lighter than the . . .
Tickets for a football game are available for $29 in advance or $39 if . . .
John starts a taxi business and rents a car for $77 per day. The rent . . .
Food is 24% of the Smith family (8 members) monthly budget of $15,000. Next . . .
I composed the numbers from strips of paper. Find the odd one out.
Which number required the most paper?
Jane and Gerry are lost in a forest. Gerry walks east, while Jane walks south . . .
John is Jim's son. Jay is John's son. John is a doctor's son. His father . . .
A pavement stone's side length is 9 cm and it weighs 20kg. How much stone do . . .
Gerry puts 1/10 of his weekly allowance in the bank for college. If he has . . .
Australia defeated American Samoa and set a world record for the largest . . .
Estimate the volume of Bob if he weighs 100kg. 1kg = 2.2 pounds 1 liter . . .
A boat has a ladder that has eight rungs. Each rung is 20cm apart. The bottom . . .
Use of composite materials decreases the weight of passenger airplanes. How . . .
Modern petrol-electric hybrid cars typically have so many sensors that you can . . .
Find the total discount which is equivalent to a discount of 25% followed by a . . .
Dieter's new design of frequency-doubling power converter has an efficiency of . . .
If Bob is exactly 33 years old on the 333rd day of this year, in what month was . . .
A frog jumps around the outside edge of a room from a dark tile to the next . . .
A 2-hour-long television program included 12 minutes of commercials. What . . .
Leslie Green asks: Scientists and engineers need to use quantities which can . . .
Make up one dollar by using 50 coins. What is the number of dimes that can be . . .
Leslie Green asks: Symmetry is a very big subject, involving much more . . .
What day of the week is it 777 hours after noon on Monday?
You are making a bank deposit of $995. You have an unlimited number of $50s, . . .
A loaded truck weighs between 4 and 5 tons. How many tons would 45 trucks . . .
John put $10,000.00 in a savings account at an annual interest rate of 4%. He . . .
In 2000, the population of a small town was 10,000 residents. If the annual . . .
Which of the following could be indicative of a successful business?
In a basketball tournament, a team must be defeated twice to be eliminated. . . .
A full box with 100 matches weighs the same as two boxes with 40 matches each. . . .
The cross-section of the identical arc stones is a trapezoid with three equal . . .
The diagram shows a road network. All cars drive in one direction from A to B. . . .
I would like to rearrange the items in the six bins shown on the right to . . .
How many boxes measuring 1 x 2 x 3 can be packed into a container measuring 5 . . .
How many chain links do I need to produce a 2.4-meter chain? All sizes are . . .
To paint four solid white lines and two dashed white lines costs $999.00 per 1 . . .
Benny Bunny starts jumping from a hole. Every leap is two times longer than . . .
Where is the center of gravity (center of mass) of the orange shape?
Three boys want to equally share three pancakes. The picture shows the . . .
If 10% of the people get 90% of the total salary paid in a county, and the . . .
What is the number of "Friday the 13
th
" that occur in 2012 if . . .
A total of 321 employees work for company XYZ and two thirds of them are men. . . .
Find the best deal.
Bob is paid $5,000 a month for his regular job. During Summer holidays, he . . .
The business of company A is 10% greater than the business of company B now. . . .
John is going to repair his house. There are three major activities: . . .
The picture shows a simplified statement of income for company ABC in million. . . .
I have a rectangular piece of cheese with a round hole. What line cuts the . . .
I place 1000 coins in two columns in a wooden box, and they fit nicely as . . .
There are 135 cars in a village of 30 families. Each family has either 4 or 5 . . .
It costs $27 to paint a cube. Before painting, we divide the cube into two . . .
A $10 million lottery pot is divided into equal increments over 25 years. The . . .
If three students eat three apples in 40 seconds, how long will it take six . . .
John works 5-hour shifts at a call center. He earns $5 per hour and $5 per . . .
A taxi company charges $1.95 for the first mile and 50 cents for each . . .
A bicyclist pedals downhill at 25 km/h (kilometers per hour) and uphill at 10 . . .
You have 27 dimes; 26 are real and one is fake. All the real ones weigh the . . .
Are you a good bargain shopper? Find the best deal.
A city hall floor is to be tiled in the following pattern. The hall measures . . .
A restaurant sells a 30 cm (in diameter) pizza for $9, while their large 40 cm . . .
A real estate agent receives a 5% commission on the selling price of a house . . .
A real estate agent receives a 5% commission on the selling price of a house . . .
Estimate the average width of the lake shown on the right.
In a casino on a Sunday, 90% of the visitors lost $200 each, 9% of the . . .
In a survey of customers, 2/3 of the female clients and 3/4 of the male clients . . .
I take half of the coconuts plus a coconut. What percentage of coconuts do I . . .
A girl begins to ascend a mountain from its base at 8:00. She follows a . . .
Andrew is expecting two important 10-minute phone calls today at a randomly . . .
Bill is going to visit his family in New York. He lives 105 miles away in . . .
How many 1x1 squares fit into the large square with the side length 3.7? . . .
A group of 24 scouts goes on a trip. They prepare enough food to last 10 days. . . .
Water weighs 1000kg per cubic meter at 4 degrees Celsius. Fresh snow that . . .
In 2013, 87.5% of Swiss train passengers arrived at their destination with no . . .
The heights of the masts from the first to the fifth are 32 m, 36 m, 35 m, 32 . . .
John buys a car, paying 20% in cash. The rest of the amount is paid by a . . .
You are driving your mother's car home. Make a deal!
In a company all people except “shop workers” have 2 direct subordinates. How . . .
The State Tennis tournament starts with 128 players. How many rounds must be . . .
A solid metal ball weighs 9 pounds. How much will another ball of the same . . .
Items accepted by an airline must not be more than 3 x 4 x 12 ft long. What . . .
According to USDA's Economic Research the average American ate 2000 lbs of food . . .
The straight road of 40 km long is divided into three different parts. The . . .
A girl caught her first fish after 30 minutes of waiting. She caught each next . . .
Seven trees are planted in a park, with exactly 3 meters between each . . .
How long do One Thousand and One Nights last? A Persian king, Shahryar, . . .
What is the most money you can have in $1, $2, $5, $10, $20, and $50 bills and . . .
Americans measure the temperature in
o
F. Europeans measure the . . .
The size of most credit cards is 85.60 x 53.98 mm ( 3 3/8 x 2 1/8 in ). . . .
A very old car takes 2 hours 48 minutes to get to my granny's house, 84 km . . .
Two automobiles set off at the same time, one from Vevey and the other from . . .
A driver's eyes are about 1.3 m above the ground, while the hood is 2 m in . . .
Gerry drives to Jane's house at 60 miles per hour and comes back at 40 miles . . .
How many revolutions did the Earth make around its axis in 20
th
. . .
Ten men met at a conference. It took 4 seconds for each man to shake hands . . .
There were 196 countries on the Earth in 2010. The 2-letter codes are . . .
My bath has two taps and a plug hole. The cold tap on its own fills the bath . . .
A shopkeeper of a Dairy stands six feet tall and wears size 13 sneakers. What . . .
I picked an integer from 1 to 1000. What is minimum number of questions, with . . .
Jane purchased a house for $ 400,000. She wants a Real Estate Agent to sell . . .
A short word can be written forward, backward or upside down while remaining . . .
In how many ways can Jane put two eggs into the package? The color of the . . .
Leslie Green asks:
Endocrinic Igorosis
is a horrible . . .
Gerry has $30 in pennies, nickels, dimes, and quarters with proportion: 25 : . . .
Martin has ten thousand dollars in the Mad Money's bank account. The interest . . .
Granny is making a cookie for each of her 12 children, her 28 grandchildren, . . .
Leslie Green asks: Bethany throws a hard ball at John when they are in the . . .
Jane has a 5-liter bucket with 3%-fat milk and 3-liter bucket with 5%-fat milk. . . .
The 52-page newspaper "The Daily Dog News" consists of double sheets. Edgar . . .
Where is the speed of sound the smallest? 1 km = 1000 m = 1000 meters
Lottery 6-digit numbers are from 000001 to 999999. A ticket is considered to . . .
At Wal-Mart, CDs cost $0.50 per disk, and pens cost $1.00 each. Which . . .
A father wishes to divide a square piece of land among his five sons. He . . .
John's dad pays him $8 for each correct answer he gives in his math homework . . .
Bob is looking for a new job. He has three offers with the same starting . . .
Bob will work 5 days. Which payment plan should he choose?
A restaurant sells a 30 cm (in diameter) pizza for $9, while their large 40 cm . . .
A real estate agent receives a 5% commission on the selling price of a house . . .
The traveling salesman problem: a salesman has to visit eight towns and return . . .
Blind people use a special method to read texts. The method was invented by . . .
I use a room that is 7 x 11 to arrange five boxes. I would like to move the . . .
I placed seven balls into a square box. Is it possible to rearrange the balls . . .
Brad is framing a small flower box by four rectangular bricks. Each of the . . .
Yesterday, I caught 30 fish of a certain size in a pond. I marked and . . .
Estimate the area of the lake shown on the right.
In a casino on a Sunday, 90% of the visitors lost $100 each, 9% of the . . .
Several plumbers work on a pipeline installation, which 1 plumber is able to . . .
John works on a 12-month project. Forty percent of the first 3-month activity . . .
A project manager needs a car 3 days per week. The daily cost of car renting . . .
The average hourly wages of men and women in company A are $21 and $16, . . .
In an investment club, 90% of the members bought stock in company A, 80% . . .
If 9 workers can build 9 houses in 9 months, then how many months would it . . .
Jim sells 60 percent of pineapples he had and throws away 10 percent of the . . .
A space rocket has a critical fuel system, protected by 4 independent safety . . .
A city hall floor is to be tiled in the following pattern. The hall measures . . .
It costs $24 to paint a cube. Before painting, it was cut in four pieces by . . .
A full box with 70 matches weighs the same as four boxes with 10 matches each. . . .
If 5% of the people get 95% of the total salary paid in a county, and the . . .
Anna can complete a project in 40 days. Bill can complete the project in 50 . . .
I want to construct a solid brick from wooden cubes. Its side ratio is 1 : 2 . . .
There are 8 people in a village. They consume 8 coconuts altogether. Each . . .
Inspired by Morozkin's problem : Two children started at 6:00 and each . . .
Anna and Bill roll a six-sided die. The first person to roll a six wins. Anna . . .
The picture shows the rectangular floor plan of the first level of a house. . . .
I am placing round beads: 1 blue and 1 red; then 2 blue and 2 red; then 3 blue . . .
The rear tires of my car wear out after 60,000 miles, whilst the front tires . . .
80% of the women in company A are under 25 years old, 40% of the men in the . . .
If Mark had driven at 6 miles per hour (mph) faster than the state speed limit . . .
Since the day he was born, Bill's parents have put $1000 in his bank account . . .
John sees the reflection of the treetop in a mirror. Find the height of the . . .
In selling stock, John made a profit of 19% of the amount originally paid for . . .
The size of an NBA basketball court is about 29 by 16 meters. How many . . .
Find X.
The population density of the Italian capital Rome is about 2,000 people per . . .
Each week, Mrs. Smith gives her students as many worksheets as their age. For . . .
Jane pedaled downhill at 20 km/h (kilometers per hour) and it took 2 hours to . . .
If a real estate agent received $60,000 as a 5% commission on the selling price . . .
How much paint do you need to paint the pyramid if you need 1kg for 1 square . . .
A district sends, on average, a total of 200 million gallons of water each . . .
Gerry was born at 11:55 P.M. on December 31, 2000. Jane was born 6 minutes . . .
Steve says that he will be X years old in year X
2
. What will be . . .
Anna (A), Bill (B), Cindy (C), and Daniel (D) work on a project. (1) . . .
The picture shows a composite structure under stress. Estimate the percentage . . .
Computer Update Problem
suggested by Leslie Green I spot a computer . . .
A plastic ruler is much easier to bend in one direction than another according . . .
Leslie Green asks: Income tax is a strange concept when inflation is taken . . .
Leslie Green, Oxfordshire, UK, asks: My neighbor a famous Professor of . . .
Bob worked for 45 years. He did not work on weekends, had a 3-week summer . . .
There are two gods named Mendax and Fidelis, one on your left, the other on . . .
An elephant weighing 2 tonnes (2 metric tons) and a rabbit weighing 1kg are . . .
If $1 equals 0.9 Euros, $1 equals 1.02 Swiss francs, and 1 euro equals 9.5 . . .
The ratio of women to men at a 100-employee company is 1 : 4. The company . . .
Sasha is learning about Archimedes at school. His show-off sister is 3 years . . .
The largest denomination of currency ever printed by the Bureau of Engraving . . .
Leslie Green asks: Engineers need to use quantities which can vary over at . . .
The boss of a 10 person company is always the last to arrive, and gets the . . .
If you push a finger through the Earth in the British capital London, where . . .
There’s a tennis tournament with one hundred players. How many rounds does . . .
One hundred workers complete a project in 100 working days. Adding ten more . . .
John works 4-hour shifts at a call center. He earns $4 per hour and $4 per . . .
Tom is choosing between two brands of AA batteries for his pocket flashlight. A . . .
A taxi company charges $1.75 for the first kilometer and 25 cents for each . . .
If 9 workers can build 9 houses in 9 months, then how many months would it . . .
Jim sells 80 percent of pineapples he had and throws away 10 percent of the . . .
If eight deciliters of Swiss apple juice, priced at $4.00 per liter, are . . .
A space rocket has a critical fuel-control system protected by 4 fuel . . .
A carnival game offers you the opportunity to bet $1 on a number from 1 through . . .
Jane wants to buy a car. The fuel efficiency is two times more important to . . .
9 farmers grow 9 apples trees in 9 years. How many years would it take for . . .
A bicyclist pedals downhill at 20 km/h (kilometers per hour) and uphill at 10 . . .
You have eight dimes; seven are real and one is fake. All the real ones weigh . . .
A city hall floor is to be tiled in the following pattern. The hall measures . . .
It costs $24 to paint a cube, the cost being proportional to the surface area. . . .
The traveling salesman problem: a salesman has to visit 9 towns and return . . .
The Chinese postman problem: a postman wants to travel along each road in his . . .
The diagram illustrates five villages, A, B, C, D, and E, with the distances . . .
The Legend of Carthage: Queen Dido and her followers arrived in North Africa. . . .
Anna can complete a project in 40 days. Bill can complete the project in 50 . . .
Choose the best advice for a strategic decision to the top management of a . . .
You have 240 golden bricks identical in size and appearance but one is lighter . . .
I am selling my car. People come to my garage one at a time and make bids to . . .
A goldfish needs 1000 cubic inches of water to live in. An aquarium is 20 . . .
John's dad pays him $2 for each correct answer he gives in his math homework . . .
Bob will work 5 days. Which payment plan should he choose?
"Letter frequency. Accurate average letter frequencies can only be gleaned by . . .
I gave $120 to Brett, Cindy, and Daniel. Together Brett and Cindy received . . .
The diagram shows a road network. All cars drive in one direction from A to F. . . .
The Lucas problem. François Édouard Anatole Lucas (1842-1891) was a French . . .
A red-line subway train arrives at a station every 5 minutes and stays for 30 . . .
Four people arrive at a river at night. There is a narrow bridge, but it can . . .
Every year, a man who had a million dollars at the beginning gives away half of . . .
The speed of a bus is 25 miles per hour (mph) including stops and 40 mph . . .
Job interview logic puzzle in a bank. Which of these pieces of information . . .
Wikipedia says that the equator is about 40,075 kilometers (24,901 miles) long; . . .
In a game, Anna and Bill take 1, 2, or 3 coins on each turn. The player to . . .
John and Mary have square tiles with sizes 2 cm by 2 cm, 4 cm by 4 cm, 6 cm by . . .
John and Mary have square tiles with sizes 5 cm by 5 cm, 10 cm by 10 cm, and 15 . . .
The size of a swimming pool is 25 x 12.5 meters. How many people must jump . . .
Which point cuts the rope into two equal parts?
If John walks up an escalator at a rate of one step per second, 12 steps take . . .
Two proofreading programs, A and B, discovered 30 and 40 errors, respectively. . . .
Anna was planning to buy 10 souvenirs from the honesty shop. She wanted some . . .
Water is pumped into an empty swimming pool at a linearly increasing rate, . . .
Twenty theater tickets for the first row were randomly distributed among 20 . . .
Two years ago, I bought a cottage for $800,000. I was short of money and . . .
Mrs. Brown bought 98 boxes of strawberries at $9 per box but 25 % of them were . . .
When I put 10 cubes of ice into my glass and they melt, the water doubles its . . .
Estimate how many symbols you can write on your body if one symbol requires one . . .
A father has left 47 donkeys for you to distribute to his three sons; 1/2 . . .
Mary and John manage two different projects and they have a common budget. . . .
Management support accelerates the execution of a project by 10% during the . . .
There are 190 people in a company including the project managers and CEO. . . .
One by one, 40 cars enter a company parking lot with 40 assigned places. The . . .
You pay $6 to enter a game. You roll 2 dice. You then have two choices: you . . .
I see the reflection of the mountain peak 10 meters from me. I know that the . . .
An entrepreneur sells 1,250 tickets for a show, with 20% of them sold with 20% . . .
A pirate boat is floating on a lake. The pirates throw a heavy chest with gold . . .
A space rocket with 4 engines blew off one of them after one-month of flight. . . .
What is the minimum monthly salary you negotiate with your boss if you need . . .
What is the total surface area of 100 identical cubes which together have a . . .
You have a large supply of 5kg and 12kg weights. Six 5kg weights and one 12kg . . .
Gerry plans to swim a total of at least 1000 laps in January. He swims every . . .
Texas experiences wide temperature fluctuations within a single day. On . . .
James bought a new car for $30,000. Each year it depreciates (loses value) at . . .
While eating out Gerry and Jim together tipped their server $7 in total. . . .
The water from an open swimming pool evaporates at a rate of 5 gallons per hour . . .
The limousine service makes 100 trips Center-Aeroport every day, each of which . . .
I decided to use a password that includes 4 different numbers, with each number . . .
Gerry drives from his home to Jane's house at 50 mph. How fast must he make . . .
Gerry gave half of his money to Jane. Next day, she gave half of all her . . .
A district sends, on average, a total of 205 million gallons of water each . . .
The manager of a company planned to distribute a $101 bonus to each employee . . .
If you have a piece of paper that is 0.1mm = 0.01cm thick, how many times will . . .
What is missing?
There are 17 parallels and 12 meridians on a globe. Into how many areas is the . . .
When Pinocchio lies, his nose gets twice as long. When he tells the truth, his . . .
What is average diameter of the logs if the height of the pile is 5.33m?
The diagram shows some of the results of a six-person contest. There are two . . .
I add blue blocks one by one on the top. Does the structure fail?
A worker prepared a block for a pyramid in a day. If every day the number of . . .
A girl walked along a level road and up a hill from home and back. Her pace . . .
Eugenia wants to make a simple bridge for her dog. Currently he has to run . . .
Now that I have made a vast fortune from my patented premium dog biscuits, I . . .
There are 10 coins and 5 of them are fake. The real gold coins have the same . . .
A train runs from Lausanne to Zurich at 100 km/hour without any stops and . . .
Shops have sales all the time to attract your business. Let the buyer beware! . . .
Leslie Green asks: My neighbor John has invented a perpetual motion machine. . . .
Leslie Green asks Suppose a particular nuclear waste material has a . . .
Jane and Gerry compete in a best-of-five match. If Gerry plays so that his . . .
There is a fault with the cruise control on Hank's car such that the speed . . .
Before his death, a rich man signed his will. If my wife gives birth to . . .
Gerry promises to be at Jane's house at 19:00. If he bikes at 15mph, he . . .
The train driver knows there is a Granny on board so he wants to give her a . . .
You may have heard the expression The shortest distance between two points . . .
If $1,000 is invested in an account at 10% annual interest, how long will it . . .
Leslie Green asks: Electrical energy can be measured in Joules, but for . . .
Leslie Green asks: Suppose the light bulb in your fridge uses 1 Watt when on . . .
Leslie Green asks: A professional design standard requires that free . . .
A taxi driver called John has 6-week annual holidays. If the average fare is . . .
A peasant bought a cow and a horse. Next day, he sold them for $1,800 each, . . .
A 1-liter bottle contains a mixture that is 1/4 antifreeze, 3/4 water. A . . .
Edgar chooses one of the double sheets of "The Daily Dog News". The two . . .
One pack has 4 pencils. Another pack has 6 pencils. How many pencils are . . .
Tom and Anna had 6 apples. They ate two apples. How many apples do they have . . .
Which of the following is equal to five kilograms?
There are eight legs. How many horses are there?
How many birds do you see in all? 
Which animal is the second from the left? 
How many fingers and thumbs do you have on your hands?
Jim threw eight dimes. How many coins landed heads up?
How many matches are there?
Find the longest vehicle.
Which digital clock time is closer to noon?
How many ropes are there in the picture?
Which is the fourth number from the right?
There were 8 sheep in a herd, and 5 got lost. How many were left?
How many blue squares are there in the picture?
How many times did I fold the paper?
This Pinocchio toy has a wooden head, body, legs and arms. How many wooden . . .
How many more eggs can you put into the package?
Anna has six pennies. Which toy can she buy?
Select the picture that shows that the right part is bigger than the left part.
About how many screws placed in a line are as long as the screwdriver?
Which sand pie has three equal parts?
How many green tiles are there?
Alex buys three bags of marbles. The marbles are priced differently. How . . .
How many red numbers are there?
How many city blocks are there between River street and State street on the . . .
Which brick is the second from the right?
I am looking for house 221. Which way should I go?
I am looking for house 521. Which way should I go?
Which job does not require math?
Which is the fifth button on the fourth line ?
From which state does the vehicle registration plate include the greatest . . .
How many white tiles are there?
How many chairs does the picture show?
Which number will be served next?
A kitten ate 123 grams of food on Saturday and 321 grams of food on Sunday. . . .
A honeycomb is a mass of hexagonal wax cells built by honeybees in their nests. . . .
How many fruits are outside the semi-circle?
The top screw is 10 centimeters long. The bottom screw is 6 centimeters long. . . .
How many Euros are there?
What time will the clock show in 35 minutes?
Brad's hockey training started at 2:30. It took 1 hour and a half to play. . . .
Which number has been already served?
Anna arrived at the swimming pool at 9:00 A.M. and left at 1:00 P.M. How . . .
There are ten apples in each bag. Which set would have exactly thirty-one . . .
At Jane's birthday party, all guests gave her a present. She also gave a small . . .
How many objects are there in the picture?
How many pens are there?
There are three of us here and there are 18 pancakes. What is a fair share? 
We want to come off the Interstate at exit 42 and we have just passed exit 38. . . .
When did the Olympic Games in Beijing take place?
Forty young people participated in a competition. Sixteen of them were girls. . . .
Which temperature is shown on the thermometer?
Along State Street, I am three city blocks from the nearest bus stop and four . . .
A farmer bought 3 cows for $3000 and sold them for $4000. He bought them . . .
Eugenia is learning to play the piano. She practices 45 minutes a day on . . .
Alex is framing a small flower box. He wants the box to be 80 centimeters . . .
A team has $90.00 to buy balls. One ball costs $7. The team gets every fifth . . .
Anna has two $100 notes. She also has eleven $10 notes and nine $1 notes. . . .
How many toys cost more than one dollar?
Three large rods and five small rods fit exactly inside this rectangular box. . . .
Which area of the kite is the largest?
What time will the analog wristwatch show in 45 minutes?
A peasant bought a cow for $3000 and sold her for $4000. He bought her back . . .
A team has $100. One ball costs $8. The team gets every sixth ball for free. . . .
John and his sister collect postage stamps. He has 777 postage stamps, and his . . .
What time is 37 minutes before noon?
A sign shows how much time it takes to walk from Montheron Abbey to different . . .
A math teacher has 21 students in her class. Anna, Bill, and Craig are asleep, . . .
Which one has the largest maximum size?
John paid $28 for the cacao. He gave the seller $50. Approximately how much . . .
If I spin the spinner once and it makes three and a half turns, on which sector . . .
There are 44 students in a camp. How many iPads does the camp need if two . . .
How many tiles fit in the area inside of the path with square tiles?
Benny Bunny is one year and five months old. How many months old is Benny . . .
If one apple costs 17p, how much do four apples cost? 
Berlin is +6oC. London is +3oC. Moscow is . . .
Ben's grandmother asked him to go to the store to buy strawberries. He only . . .
Alex has started painting a fence. By twelve o'clock, he has painted this . . .
Mr. Johnson has a large piece of land, as pictured here. He divided the land . . .
At a local school, students sold post cards for a fundraiser. The bar graph . . .
The total land area of the United States is 9,172,389 square kilometers. What . . .
The price of an apple is 31 cents. The price of a tangerine is 40 cents. . . .
John had $89 in his piggy bank. He added $10. How could he split the . . .
A clock shows this time. How long is it from this time until 11am? . . .
John ate a piece of a pizza and left the rest for his friends, Jim and Jack. . . .
The figure shows the diagram of a living room floor. The walls are shaded. . . .
I saw the lightning strike the ground near the far side of the lake and heard a . . .
Your dad pays you $144 a day for the 6 seconds that you take to wash your . . .
In April a car is driven 22 miles, 23 miles, 38 miles, and 37 miles. What is . . .
A 165 R15 radial tire costs $59.95 and the Federal Excise Tax is $2.39. What . . .
At the next stop, 3 students get off while 5 get on. If initially there were . . .
Jane paid six dollars and thirty cents for 9 eggs. How much did each egg . . .
If each coin has a value of 50 centimes, how much money is there?
How many dimes are worth 22 quarters? A quarter dollar, or quarter, is a U.S. . . .
A mile long train travels 2 miles a minute. How much time does it take for . . .
A puzzle used to cost $49.95 but now the price is $33.45. How much is the . . .
What is the least and the most number of fathers the girls might have?
What is the minimum number of people needed in a boat to be certain that at . . .
A puppy sleeps a total of 84 hours per week of 7 days. On average, how much . . .
If Edgar cleans his teeth twice per week and changes the toothbrush every time . . .
At a shop, the cost for two cereal bars and three small bottles of milk is 5.50 . . .
The number of hours left today is half of the number of hours already passed. . . .
We want to buy 120 kilograms of potatoes. Which is the better purchase?
The original price of an umbrella was $16. What was the price of the umbrella . . .
Ann went to a movie. The movie started at 11:55 A.M. and lasted 117 minutes. . . .
A dozen balloons cost 48 cents. How many balloons cost 1 dollar?
A farmer normally sells sheep for $200 each. This winter, the farmer is . . .
The distance between two buoys can be anything between 8 and 10 meters,
even . . .
Two cyclists race on a circular track. The first can ride around the track in . . .
The boxing ring is 6 meters in length on each side between the ropes. How . . .
A county hospital proudly announces "A new baby is born every 20 minutes, 24 . . .
An amoeba is a shapeless unicellular organism. An amoeba propagates by simple . . .
What is the largest number of pizza pieces I can obtain by making three . . .
Which of the following is equal to 3 quarters of a million dollars?
Find W.
An ostrich runs at an average 40 mph for 12 minutes. How far is it? PS: mph . . .
How many minutes are left to midnight?
If Jane drinks a glass of milk during every school lunch, how much milk does . . .
If the sum of Evguenia and Olga's ages is 44 now, what will the sum of their . . .
If Gerry has $5 in dimes and Jane has the same amount in quarters, how many . . .
Martin has 2,000 bills, 2,000 Czech korunas each. How rich is he if $1 is . . .
If I convert all the letters in this sentence to UPPER CASE, in what language . . .
The largest denomination of currency ever printed by the Bureau of Engraving . . .
According to 
Gasoline costs $1.99 per gallon. How much will it cost Gerry to fill his . . .
A granny’s dozen is one more than a dozen. Gerry's granny prepared . . .
John paid $60 for 8 CDs. All CDs cost the same price, but 2 of them were on . . .
John is making a rectangular flower box. He is using wood that is 10 . . .
To complete one set of pipe installations, Bob the plumber needs the following . . .
Tim placed an order for a book. If the order is below $40, then the minimum . . .
The total price of an apple and a tangerine is 39 cents. The total price of 2 . . .
If eight people can stand on a square meter of carpet, how many of them can . . .
The left clock runs slower at a rate of 6 minutes per hour. The second clock . . .
There are 12 men on a basketball team, and in a game 5 of them play at any one . . .
Anna earned $72. She gives her mother 1/3 of this amount and spends 1/4 of the . . .
If you would like to give a tip of 15% and you have no change, without using a . . .
What time is 43210 seconds before midnight?
The picture shows a supermarket bill with 22 items. What is maximum mistake I . . .
I want to build a fence around a garden. The perimeter of the garden is 12 . . .
How many different nonzero weights can you measure with a balance and three . . .
A stadium security system consists of two stages. In the first stage, 60% of . . .
The picture shows four supermarket lines viewed from above. The numbers are . . .
The picture shows the floor plan of a house. Which room has the largest . . .
In 2010, the population of the Italian capital Rome was 2,761,477 and the . . .
A hammer and a nail cost $21. If the hammer cost $20 more than the nail, how . . .
The cost of a party is $66 plus $6 per person, so what would be the cost of a . . .
The drama club is selling tickets to a play for $9 per ticket. The cost to . . .
Apples are sold in bags of four that cost $5 per bag, or bags of six that cost . . .
A class picnic is estimated to cost $232. The boys agreed to contribute $1 more . . .
A piece of soap is 50x40x100 mm. A layer of 0.125 mm disappears every time I . . .
I place 14 chairs along the walls in an empty rectangular room. The number of . . .
Which of these choices is the size of a picture with the same perimeter as a . . .
The button "8" on my calculator is broken. I replace the button by . . .
How many stars with a side length of 4 cm can I cut and bend from a wire that . . .
Metro Card prices: a single ride is $2.5 and a 7 day Metro Card costs $29. . . .
There are 14,600,000 tiles on the roofs of the old Swiss town of Murten. How . . .
A couple has 81 coins to share between them. How many coins will the man get . . .
I require a passcode that uses 4 different numbers. I chose the shortest . . .
Gerry bought ice cream cones for Jane, her friend Anna and for himself for . . .
After a 2-month tennis course, three friends recorded their weight loss. . . .
Anna's recipe needs 3/4 cup of sugar and 7/4 cup of wheat. How many cups in . . .
Gerry and Jane were supposed to meet at 11:50. If Gerry arrived 12 minutes . . .
In which team does a person get the greater amount of the healthy food if they . . .
There is an equal amount of money in pennies, nickels, dimes, and quarters. . . .
Passengers have a maximum allowable weight for their luggage. They are then . . .
When it is 11am in Geneva (Switzerland) it is 5am in New York (USA). The flying . . .
The boy dreams of being an astronaut. How long does he need to study and . . .
Estimate the cost of a carpet 15 yards long and 12 yards wide with the . . .
Estimate the number of strawberries in the box if we see only a third of them.
6 boys and 12 girls attend prom at the Cool High School. If each of the boys . . .
You are making a bank deposit of $780. You have an equal number of $50s, $10s . . .
The cost of a party is $55 plus $5 per person, so what would be the cost of a . . .
Jim bought a laptop at 25% off the regular price of $500.00. He also bought a . . .
A new road is being constructed to re-route its flow around the exterior of a . . .
Jack went for a drive. Before he left, he noticed that the gas tank was 3/4 . . .
A city of 1,111,000 residents had a total of 111 car accidents in 1999. There . . .
Which coupon should Bob use to save the most money on 2 hammers originally . . .
A stadium security system consists of two stages. In the first stage, 60% of . . .
There are 140 cars in a village of 30 families. Each family has either 4 or 5 . . .
A girl drives from home to her school at an average speed of 90 kilometers per . . .
A 1-meter tall fence is parallel to a very high wall 1 meter away. What is . . .
A 100-liter vessel is full of a mixture of juice concentrate and water, in . . .
Normal milk has 35 grams of fat per liter. Fat free milk has 5 grams of fat . . .
Four children Addy, Brady, Cady and Dendy started at the same point S and . . .
The space between these green square tiles is filled by grout. Its width is . . .
Enclosed is a lamb using a 4-crosspiece log fence. What is the smallest . . .
Four towns are situated at the corners of a square. The government decided . . .
Jim stayed for 18,000 seconds at a zoo. At what time did he leave if he . . .
A man and his equipment weigh 180kg on Earth. If he takes the same set of . . .
A gardener increased the length of his rectangle-shaped garden by 10% and kept . . .
Which has the least volume?
600 employees work for company XYZ, where the ratio of men to women is 7 to 5. . . .
A piece of wood is to be sawed into 3 smaller similar pieces. If a cut . . .
Seven apricots were dried and no longer contain water. If the fruits . . .
I saved $5 on buying coconuts on sale. If I spent $20 on the coconuts, what . . .
I want to rearrange the logs in the following manner: 8 logs on the bottom row, . . .
I paid $50 when I filled the tank of my car, at which stage the odometer said . . .
The Tsar Bell weighed 202 tons (like three battle tanks) before a huge slab (12 . . .
What is the minimum number of pizzas that a class of 21 students should buy if . . .
John's tent is 1.5 m high, 2 m long, and 1.5 m wide. How much water will fall . . .
The diagram shows the lowest point and the highest point of our planet. What . . .
The knights gallop 100 m in 10 seconds. There are 1000 m in 1 km. Would the . . .
Jim's route must start and end at his home. He wants to visit at least 3 . . .
Kate was born on December 31st, yet her birthday always falls in the summer. . . .
Estimate how many cubes there are in the pyramid.
Gerry arrived in the Murtenhof Hotel on January 28th in the afternoon and left . . .
A pedestrian crosswalk consists of black and white stripes each 0.4 m wide. . . .
Leslie Green asks: A road traffic junction has no provision for pedestrians. . . .
The King of a far off land has just had the ballroom lights in his palace . . .
Leslie Green asks: You accidentally knock an almost full opened can of . . .
It costs $24 to paint a cube. Before painting, we divide the cube into two . . .
If three students eat three apples in 33 seconds, how long will it take nine . . .
A 2-meter wide path is constructed around the outside of a rectangular garden . . .
Which spring wire is longest?
Which is the side view of the 3-D shape?
The area of the white cross is 45% of the area of the square flag. Five white . . .
Estimate the length of the blue cord.
The picture shows an example of the Aztec code for Wikipedia. Estimate the . . .
A jigsaw puzzle consists of 250 identically shaped pieces to spread on a plane. . . .
A chain with 3 links is 10 cm long. A chain made from 5 links of the same . . .
All sizes can be 1% bigger or smaller compared with the initial design sizes. . . .
I can buy gold bars in boxes of 25 kilograms, 45 kilograms, 65 kilograms, and . . .
Sixty carpenters and forty plumbers work together. The average daily rate of a . . .
The picture shows a simplified statement of income for company ABC in millions. . . .
To unlock his mobile device, Alex must enter the four different digits of his . . .
Anna has 8 biscuits, Bill has 6, and Cindy has 1. They share them out equally. . . .
What is the minimum number of cuts needed to cut a log into 24 equal pieces? . . .
The picture shows the rectangular floor plan of the first level of a house. . . .
A revolving door with three wings makes 5 complete rotations in a minute. . . .
On a trip, Evguenia cycled 5 km in the first 15 minutes and then 4 km in the . . .
Mr. Smith bought glasses for all members of his family including animals and . . .
You have 3 coins. One is counterfeit and is either heavier or lighter than the . . .
Jane and Gerry are lost in a forest. Gerry walks east, while Jane walks south . . .
John is Jim's son. Jay is John's son. John is a doctor's son. His father . . .
A pavement stone's side length is 9 cm and it weighs 20kg. How much stone do . . .
A boat has a ladder that has eight rungs. Each rung is 20cm apart. The bottom . . .
Use of composite materials decreases the weight of passenger airplanes. How . . .
Modern petrol-electric hybrid cars typically have so many sensors that you can . . .
Dieter's new design of frequency-doubling power converter has an efficiency of . . .
A frog jumps around the outside edge of a room from a dark tile to the next . . .
A 2-hour-long television program included 12 minutes of commercials. What . . .
Leslie Green asks: Symmetry is a very big subject, involving much more . . .
What day of the week is it 777 hours after noon on Monday?
A full box with 100 matches weighs the same as two boxes with 40 matches each. . . .
The cross-section of the identical arc stones is a trapezoid with three equal . . .
The diagram shows a road network. All cars drive in one direction from A to B. . . .
I would like to rearrange the items in the six bins shown on the right to . . .
How many boxes measuring
1 x 2 x 3 can be packed into a container measuring 5 . . .
How many chain links do I need to produce a 2.4-meter chain? All sizes are . . .
To paint four solid white lines and two dashed white lines costs $999.00 per 1 . . .
Where is the center of gravity (center of mass) of the orange shape?
Three boys want to equally share three pancakes. The picture shows the . . .
What is the number of "Friday the 13th" that occur in 2012 if . . .
Find the best deal.
The business of company A is 10% greater than the business of company B now. . . .
John is going to repair his house. There are three major activities: . . .
I have a rectangular piece of cheese with a round hole. What line cuts the . . .
I place 1000 coins in two columns in a wooden box, and they fit nicely as . . .
John works 5-hour shifts at a call center. He earns $5 per hour and $5 per . . .
A city hall floor is to be tiled in the following pattern. The hall measures . . .
Estimate the average width of the lake shown on the right.
In a casino on a Sunday, 90% of the visitors lost $200 each, 9% of the . . .
A girl begins to ascend a mountain from its base at 8:00. She follows a . . .
Andrew is expecting two important 10-minute phone calls today at a randomly . . .
How many 1x1 squares fit into the large square with the side length 3.7? . . .
A group of 24 scouts goes on a trip. They prepare enough food to last 10 days. . . .
Water weighs 1000kg per cubic meter at 4 degrees Celsius. Fresh snow that . . .
The heights of the masts from the first to the fifth are 32 m, 36 m, 35 m, 32 . . .
In a company all people except “shop workers” have 2 direct subordinates. How . . .
A solid metal ball weighs 9 pounds. How much will another ball of the same . . .
Items accepted by an airline must not be more than 3 x 4 x 12 ft long. What . . .
According to USDA's Economic Research the average American ate 2000 lbs of food . . .
A girl caught her first fish after 30 minutes of waiting. She caught each next . . .
How long do One Thousand and One Nights last? A Persian king, Shahryar, . . .
The size of most credit cards is 85.60 x 53.98 mm ( 3 3/8 x 2 1/8 in ). . . .
How many revolutions did the Earth make around its axis in 20th . . .
Ten men met at a conference. It took 4 seconds for each man to shake hands . . .
There were 196 countries on the Earth in 2010. The 2-letter codes are . . .
A shopkeeper of a Dairy stands six feet tall and wears size 13 sneakers. What . . .
A short word can be written forward, backward or upside down while remaining . . .
Leslie Green asks: Endocrinic Igorosis is a horrible . . .
Jane has a 5-liter bucket with 3%-fat milk and 3-liter bucket with 5%-fat milk. . . .
Where is the speed of sound the smallest? 1 km = 1000 m = 1000 meters
Lottery 6-digit numbers are from 000001 to 999999. A ticket is considered to . . .
At Wal-Mart, CDs cost $0.50 per disk, and pens cost $1.00 each. Which . . .
A father wishes to divide a square piece of land among his five sons. He . . .
The traveling salesman problem: a salesman has to visit eight towns and return . . .
Blind people use a special method to read texts. The method was invented by . . .
I use a room that is 7 x 11 to arrange five boxes. I would like to move the . . .
I placed seven balls into a square box. Is it possible to rearrange the balls . . .
Brad is framing a small flower box by four rectangular bricks. Each of the . . .
Yesterday, I caught 30 fish of a certain size in a pond. I marked and . . .
John works on a 12-month project. Forty percent of the first 3-month activity . . .
A project manager needs a car 3 days per week. The daily cost of car renting . . .
The average hourly wages of men and women in company A are $21 and $16, . . .
Jim sells 60 percent of pineapples he had and throws away 10 percent of the . . .
A space rocket has a critical fuel system, protected by 4 independent safety . . .
It costs $24 to paint a cube. Before painting, it was cut in four pieces by . . .
Anna can complete a project in 40 days. Bill can complete the project in 50 . . .
I want to construct a solid brick from wooden cubes. Its side ratio is 1 : 2 . . .
Anna and Bill roll a six-sided die. The first person to roll a six wins. Anna . . .
I am placing round beads: 1 blue and 1 red; then 2 blue and 2 red; then 3 blue . . .
80% of the women in company A are under 25 years old, 40% of the men in the . . .
John sees the reflection of the treetop in a mirror. Find the height of the . . .
Find X.
If a real estate agent received $60,000 as a 5% commission on the selling price . . .
How much paint do you need to paint the pyramid if you need 1kg for 1 square . . .
Steve says that he will be X years old in year X2. What will be . . .
The picture shows a composite structure under stress. Estimate the percentage . . .
A plastic ruler is much easier to bend in one direction than another according . . .
Leslie Green asks: Income tax is a strange concept when inflation is taken . . .
Leslie Green, Oxfordshire, UK, asks: My neighbor a famous Professor of . . .
There are two gods named Mendax and Fidelis, one on your left, the other on . . .
Leslie Green asks: Engineers need to use quantities which can vary over at . . .
The boss of a 10 person company is always the last to arrive, and gets the . . .
If you push a finger through the Earth in the British capital London, where . . .
Tom is choosing between two brands of AA batteries for his pocket flashlight. A . . .
If eight deciliters of Swiss apple juice, priced at $4.00 per liter, are . . .
A carnival game offers you the opportunity to bet $1 on a number from 1 through . . .
Jane wants to buy a car. The fuel efficiency is two times more important to . . .
The traveling salesman problem: a salesman has to visit 9 towns and return . . .
The Chinese postman problem: a postman wants to travel along each road in his . . .
The diagram illustrates five villages, A, B, C, D, and E, with the distances . . .
You have 240 golden bricks identical in size and appearance but one is lighter . . .
A goldfish needs 1000 cubic inches of water to live in. An aquarium is 20 . . .
I gave $120 to Brett, Cindy, and Daniel. Together Brett and Cindy received . . .
The diagram shows a road network. All cars drive in one direction from A to F. . . .
The Lucas problem. François Édouard Anatole Lucas (1842-1891) was a French . . .
A red-line subway train arrives at a station every 5 minutes and stays for 30 . . .
Every year, a man who had a million dollars at the beginning gives away half of . . .
In a game, Anna and Bill take 1, 2, or 3 coins on each turn. The player to . . .
The size of a swimming pool is 25 x 12.5 meters. How many people must jump . . .
Which point cuts the rope into two equal parts?
If John walks up an escalator at a rate of one step per second, 12 steps take . . .
Anna was planning to buy 10 souvenirs from the honesty shop. She wanted some . . .
Mrs. Brown bought 98 boxes of strawberries at $9 per box but 25 % of them were . . .
When I put 10 cubes of ice into my glass and they melt, the water doubles its . . .
Estimate how many symbols you can write on your body if one symbol requires one . . .
A father has left 47 donkeys for you to distribute to his three sons; 1/2 . . .
Management support accelerates the execution of a project by 10% during the . . .
I see the reflection of the mountain peak 10 meters from me. I know that the . . .
A pirate boat is floating on a lake. The pirates throw a heavy chest with gold . . .
What is the total surface area of 100 identical cubes which together have a . . .
You have a large supply of 5kg and 12kg weights. Six 5kg weights and one 12kg . . .
While eating out Gerry and Jim together tipped their server $7 in total. . . .
What is missing?
There are 17 parallels and 12 meridians on a globe. Into how many areas is the . . .
The diagram shows some of the results of a six-person contest. There are two . . .
I add blue blocks one by one on the top. Does the structure fail? 
A worker prepared a block for a pyramid in a day. If every day the number of . . .
Now that I have made a vast fortune from my patented premium dog biscuits, I . . .
Leslie Green asks: My neighbor John has invented a perpetual motion machine. . . .
Leslie Green asks Suppose a particular nuclear waste material has a . . .
The train driver knows there is a Granny on board so he wants to give her a . . .
You may have heard the expression The shortest distance between two points . . .
Leslie Green asks: Electrical energy can be measured in Joules, but for . . .
Leslie Green asks: Suppose the light bulb in your fridge uses 1 Watt when on . . .
Leslie Green asks: A professional design standard requires that free . . .
A 1-liter bottle contains a mixture that is 1/4 antifreeze, 3/4 water. A . . .