Question

Calcule o valor de : 8!/6!2!

Answer 1

8!/6!2! = 8.7.6!/6!/2! = 56/2! = 56/2.1 = 56/2 = 28

Answer 2

$\frac{8!}{6!2!} = \frac{8*7*6*5*4*3*2*1!}{6*5*4*3*2*1!2*1!} = \frac{8*7}{2} = \frac{56}{2} = 28$