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Water level (Posted on 2003-03-10) Difficulty: 2 of 5
Iím sitting in a boat in a pool. In the boat with me is a cannonball. What happens to the level of the pool if I take the cannonball out of the boat and drop it into the pool? Does the level increase, decrease or stay the same?

See The Solution Submitted by fwaff    
Rating: 4.1333 (15 votes)

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Solution re(2): depends on the density--Another solution | Comment 11 of 19 |
(In reply to re: depends on the density by fwaff)

While the title of the puzzle is "Water level", the word "water" never appears in the puzzle itself. If this were a pool of mercury, the cannonball would float and the level would remain the same.
  Posted by Charlie on 2003-03-21 09:14:13

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