False coin, math problem. - Two Plus Two Newer Archives

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False coin, math problem.

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10-12-2007, 05:26 AM

Drag

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Join Date: Oct 2006

Location: France

Posts: 117

False coin, math problem.

There are 12 coins, one of them is a fake. It is either heavier or lighter than the rest. We have a balance in our disposal.

How many tries we need to find the fake coin and determine if it is heavier or lighter than the true coin?

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