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Problem #4 MEDIUM

Heavy Gold Gold coins

Amazon Math Logic

Problem Statement

You are given 10 bags of gold coins. Nine of the bags contain genuine gold coins, each weighing exactly 10 grams. One bag, however, contains counterfeit coins, each weighing exactly 9 grams. You have a digital weighing scale that shows the exact weight of whatever is placed on it. You want to identify the counterfeit bag. What is the minimum number of weighings required on the digital scale to find the counterfeit bag?

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