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This puzzle goes a step further from the previous one. You have eight bags, .......

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This puzzle goes a step further from the previous one.
You have eight bags, each of them containing 48 coins. Five of those bags contain only true coins, the rest of them contain fake coins. A fake coin weighs 1 gram less than a real coin. You have an accurate scale, with the precision of up to 1 gram.
Weighing only once and using the minimum number of coins, how can you find the bags containing the fake coins?

posted Nov 10, 2014 by anonymous

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1 Answer

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Number the bags 1 to 8
Take out 0 (no coin from the first bag), 1 coin from the second bag etc., 2- from 3rd, 4- from 4th, 7- from 5th, 13- from 6th, 24 - from 7th and 44 coins from the last, 8th bag. Total of 95 coins.
Each triple is unique enabling an easy way to identify the bags with fake coins

answer Sep 6, 2018 by Hanifa Mammadov

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