ToT 2019-fall JA3
There are 100 visually identical coins of three types: golden, silver and copper. There is at least one coin of each type. Each golden coin weighs 3 grams, each silver coins weighs 2 grams and each copper coin weighs 1 gram. How to find the type of each coin performing no more than 101 measurements on a balance scale with no weights.
Dataset text AI-MO AoPS. Quoted with source.
Also ToT 2019-fall SA3.
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