Take a piece of paper and cut out a perfect circle with diameter 1 inch.

What is the diameter of the largest unaltered coin which may be passed through the hole without tearing it?

(Consider the coin to be very thin, and the paper to be very flexible and tear resistant, but not at all stretchy.)

Yeah im only 12 and I got this as soon as I read it! All you do is sit the coin in the hole then fold the paper .The whole then opens up and the coin slips through.This is the easiest puzzle on this whole website!

Posted by Lil mz naughty on 2006-06-17 21:17:20