Optimal detection of two counterfeit coi
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Liu Wen-An; Nie Zan-Kan
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Article
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2004
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Elsevier Science
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English
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We consider the following coin-weighing problem: suppose among the given n coins there are two counterfeit coins, which are either heavier or lighter than other n -2 good coins, this is not known beforehand. The weighing device is a two-arms balance. Let N A (k) be the number of coins from which k w