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Question for my LJ friends

You have twelve coins. One of them is counterfeit, and is either too light or too heavy (you don't know which). You have a balance scale. How do you determine which coin is the counterfeit with only three weighings?

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wolfeskitchen
Feb. 9th, 2007 10:33 pm (UTC)
We did the same exercise in Kung Fu for logic training. I don't remember the solution, but I remember it helped to first do it with 11 coins. (We used billiard balls)

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botticelli
thisgirliknow
Much like pineapples, I am hardcore.

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