Respostas

2013-09-02T19:42:39-03:00
Pelo Uso da Combinação

C n,p = n! / p! (n-p)!
C 7,5 = 7! / 5! * (7-5)!

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C7,5 = 7*6*5*4*3/5*4*3*2*1 = 7*6/2 = 42/2 = 21 diretorias
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1 5 1