2 years ago

Among at most how many coins can you find the “light one” if you are permitted to use the scale only twice? Only three times?

1 answer:

7 0

Answer:

So in two weighings, we can find a single light coin from a set of 3 × 3 = 9. By extension, it would take only three weighings to find the odd light coin among 27 coins, and four weighings to find it from 81 coins.

Step-by-step explanation:

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