The Fake Coin
Sunday, July 15, 2007 at 10:06AM
Emma A Holliday

15322-27IL.jpgProblem

A sneaky coin trader offers you nine coins. They appear identical but one if fake and slightly lighter than the others. Using the balance, how can you isolate the fake coin in just two weighings?

Answer

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Picture from:mhttp://www.fotosearch.com/comp/CRT/CRT151/15322-27IL.jpg

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