|Apr8-10, 01:38 PM||#1|
12 Coin puzzle
12 Coins. One of the coins is counterfeit. The counterfeit coin is either heavier or lighter than the good ones. You have a simple balance. With just 3 trips (three weighings) to the balance isolate the counterfeit coin and tell if it is heavier or lighter. No extra weights for the balance.
|Apr10-10, 09:23 AM||#2|
Sorry, previously submitted and answered. i should have done a search.
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