Question

C 8 , 4 = *



( )36

( )12

( )70

( )46

​

Answer 1

Explicação passo-a-passo:

$\sf C_{8,4}=\dfrac{8!}{4!\cdot(8-4)!}$

$\sf C_{8,4}=\dfrac{8!}{4!\cdot4!}$

$\sf C_{8,4}=\dfrac{8\cdot7\cdot6\cdot5\cdot4!}{4!\cdot4!}$

$\sf C_{8,4}=\dfrac{8\cdot7\cdot6\cdot5}{4!}$

$\sf C_{8,4}=\dfrac{1680}{24}$

$\sf C_{8,4}=70$