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[obm-l] pergunta do aluno

To: obm-l@xxxxxxxxxxxxxx
Subject: [obm-l] pergunta do aluno
From: nilton rr <nilton1a10@xxxxxxxxxxxx>
Date: Tue, 10 Aug 2004 10:20:13 -0300 (ART)
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Companheiros essa pergunta foi feita por um dos meus alunos ,peço ajuda pois não consegui resolver:

Sabendo que C(n-1, k-1) = 18 e C(n, n-k) = 60, calcule C(n-1, k). Grato

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