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The average number of weighings to locate a counterfeit coin (Corresp.)

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1 Author(s)

A solution is obtained to the problem of finding the minimum of the average number of weighings, using a balance, needed to locate one light coin from among n coins of which n - 1 are genuine and of the same weight. Optimal strategies are determined, and the anomaly that it may be better to work with n + 1 coins rather than n is examined and explained.

Published in:

IEEE Transactions on Information Theory  (Volume:25 ,  Issue: 5 )