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The Fake Coin Stacks
find the fake stack in 1 weighing
There are 10 stacks of 10 coins. Real coins weigh 1 gram each. 1 whole stack is fake, and fake coins weigh 1.1 grams. Using a digital scale only 1 time, how do you find the fake stack?
Source: A classic puzzle, retold by INFINITE SUM and fact-checked against our curated notes
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