[obm-l] A. Combinatoria

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Subject: [obm-l] A. Combinatoria
From: Júnior <jssouza1@xxxxxxxxx>
Date: Mon, 26 Sep 2005 12:10:01 -0300
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Mostrar que 2n objetos podem dividir-se em agrupamentos de n pares de (2n)!/(2^n)n! maneiras diferentes.

Júnior.