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mais combinatoria IME

To: <obm-l@xxxxxxxxxxxxxx>
Subject: mais combinatoria IME
From: "Eduardo Azevedo" <eduardo_az@xxxxxxxxxxxxx>
Date: Fri, 2 Nov 2001 17:23:44 -0200
Reply-To: obm-l@xxxxxxxxxxxxxx
Sender: owner-obm-l@xxxxxxxxxxxxxx

Seja o conjunto:

D = { (k₁, k₂) | 1 Ł k₁ Ł 13; 1 Ł k₂ Ł 4; k₁, k₂Î IN }.

Determine quantos subconjuntos L = { (x₁,x₂), (y₁,y₂), (z₁,z₂), (t₁,t₂), (r₁,r₂) }, L Ě D, existem com 5 (cinco) elementos distintos, que satisfazem simultaneamente as seguintes condiçőes:

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