I’m 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?

If not for this puzzle, I never would have realized that the jetsam in question makes a difference. The math tells me it does, I just never worked it out before, and I had assumed the level would remain unchanged. Thanks, fwaff!

Posted by Bryan on 2003-03-10 10:19:58