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Probability Puzzle for Mathematicians

Posted By: Alejandro
Date: Thursday, 10 June 2010, at 2:45 p.m.

I think T.chow and Koca will shit all over this but here goes..

There are three boxes, each with one drawer on each of two sides. Each drawer contains a coin. One box has a gold coin on each side, one a silver coin on each side, and the other a gold coin on one side and a silver coin on the other. A box is chosen at random, the drawer is opened, and a gold coin is found. What is the chance of the coin on the other side being silver?

Some of even the most heavyweight mathematicians have been slayed by these teasers in the past.

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