Question

Calcule usando a formula da combinação C 8, 3

Answer 1

$\\ C_{n,k} = \frac{n!}{k!(n-k)!} \\ \\ C_{8,3} = \frac{8!}{3!(8-3)!} \\ \\ C_{8,3} = \frac{8*7*6*5!}{3!5!} \\ \\ C_{8,3} = \frac{8*7*6}{3*2*1} \\ \\ C_{8,3} =8*7 \\ \\ C_{8,3} = 56$

Answer 2

Boa noite!

Combinação Simples.

C(8,3)

C(n,p)=n!/(n-p)!p!

C(8,3)=8!/(8-3)!3!

C(8,3)=8!/5!3!

C(8,3)=8×7×6×5!/5!3!

C(8,3)=8×7×6/3×2×1

C(8,3)=336/6

C(8,3)=56

Att;Guilherme Lima