Question

Calcule os fatoriais:
A)
6! - 5!/ 3!


B) 10!/ (12-4)!

Answer 1

$\frac{6! - 5!}{3!} = \frac{6!}{3!} - \frac{5!}{3!} = \frac{6 . 5 . 4 . 3!}{3!} - \frac{5 . 4 . 3!}{3!}$
6 . 5 . 4 - 5 . 4 =
120 - 20 = 100



$\frac{10!}{(12 - 4)!} = \frac{10!}{8!} = \frac{10 . 9 . 8!}{8!} =$

10 . 9 = 90


Espero ter ajudado