Every time a man lies his nose grows to 150 percent of its size. Every time he tells the truth it shrinks to 50 percent of its size.
What will happen if he alternates between lies and the truth?
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Two men find an old gold coin and want to have a coin toss with it to decide who gets it. The only problem is the coin is heavier on one side so it comes up heads more than tails. What is a fair way for the men to toss the coin and decide who gets the coin?
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If a mountain climber climbed up a mountain one day from midnight to midnight the next day and does the same thing the following day when coming down the mountain, would there be a time at which he was at the same position on the mountain both day?
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What temperature is twice as hot as 0 degrees Celsius?
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You have two books. One of them is upside-down and the other is rotated so the top of the book is facing you.
What is the sum of the first page in each book?
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If you have two twins, three triplets and four quadruplets; how many people do you have?
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There are several books on a bookshelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?
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You have found a mutant algae that doubles in size every hour. It takes 18 hours for one algae plant to take up half of a certain lake.
How long would it take for two of these plants to take up half of the same lake?
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There are five hen and rooster pairs. Each pair has one baby every month.
How many chickens will there be in one year?
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When is 1500 plus 20 and 1600 minus 40 the same thing?
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What is the difference between a dollar and a half and thirty five-cents?
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Does an ounce of gold or an ounce of feathers weight more?
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Two boys, Trevor and Tyler, are running a 100 meter race. The first time they race Trevor beats Tyler by 5 meters. To make things fair, the next time they race Trevor stands 5 meters behind the starting line.
Who wins the second race (assuming they run the same speed as the first race)?
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A grandfather has a broken grandfather clock that is off by a minute every hour (too fast). He figures out a way, while keeping it running at the same rate, to make the clock say the correct time twice a day.
How could he do this?
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Why are manholes round instead of square?
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A mother is 21 years older than her child. In 6 years the mother will be 5 times older than her baby.
Where is the father?
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A smart landscaper is given the task of placing 4 trees so that they are all the same distant away from each other.
How does he do this?
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It takes ten men ten hours to build a certain wall. How long does it take five men to build the same wall?
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A tomato vine is 3 meters long. The bottom foot of the vine doesn’t grow any tomatoes but the rest of the vine grows a tomato every 5 inches.
How many vegetables can grow off of the vine?
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