Question

Encontre o valor da Combinação C(8; 3) *
a) 50
b) 66
c) 24
d) 56

Answer 1

Explicação passo-a-passo:

$\sf \dbinom{8}{3}=\dfrac{8!}{3!\cdot(8-3)!}$

$\sf \dbinom{8}{3}=\dfrac{8!}{3!\cdot5!}$

$\sf \dbinom{8}{3}=\dfrac{8\cdot7\cdot6\cdot5!}{3!\cdot5!}$

$\sf \dbinom{8}{3}=\dfrac{8\cdot7\cdot6}{3!}$

$\sf \dbinom{8}{3}=\dfrac{336}{6}$

$\sf \dbinom{8}{3}=56$

Letra D