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| 1. TIME AFTER TIME | |||
 You
have two hourglasses--a 4-minute glass and a 7-minute glass. You want to measure 9 minutes. How do you do it? |
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| 2. BOTTLENECK | |||
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| 3. CHANGE | |||
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How did the man in the booth know which soda-regular or diet-the second teenager wanted? Source: Inspired by a puzzle in Mensa Presents Mighty Mind Boosters, P. Carter, J. Fulton, and K. Russell. New York: Barnes & Noble, 1996. |
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| 4. | |||
 A
boy leaves his house one summer day, and began to run into the woods
to his grandmother's house which is on the other side of the woods.
It should also be known that the boy reached his grandmother's house.
How far did the boy run into the woods? |
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| 5. NUMBERS | |||
| Correct the following equation so that
it makes sense by freely moving the given four digits but without
introducing any additional mathematical symbols. 76 = 24 |
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| 6. WHAT's NEXT? | |||
| 293 031 323 334 ??? |
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Put
a coin in a bottle and then stop the opening with a cork. 
One
teenager goes up to a food booth at a fair and says, "A cola,
please." The man working the booth asks, "Regular or diet?"
The teenager asks, "What's the difference?" and is told
that the regular costs 90 cents but that the diet soda costs $1.
The teenager says, "Give me a diet cola, please" and places
a dollar on the counter.