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Updated 1 August 2024

Favourite puzzles

41. The watermelon

40. Multiple choice

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33. Elementary logic

32. Logical fatalism

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23. Every natural number can be unambiguously described in fourteen words or less

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4. Why does a mirror?

3. The tribe that favours boys

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1. Matching socks

41. The watermelon

Watermelon

How much water must you remove from a 100 pound watermelon that is 99% water if you require the watermelon to be 98% water?

Note. A similar question is this. There are 100 people in a room, 99% of whom are women. A number of women leave the room and the proportion above drops to 98%. How many women left the room?

Previous → 40. Multiple choice

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