Question

escreva as expressões em termos de 4!:
5!/5!
5!/2!
7!-5!/4

Answer 1

$a) \ \frac{5!}{5!}=1\\ \\ b) \ \frac{5!}{2!}=\frac{5.4.3.2!}{2!}=5.4.3=60\\ \\ c) \ \frac{7!-5!}{4!}=\frac{7!}{4!}-\frac{5!}{4!}=\frac{7.6.5.4!}{4!}-\frac{5.4!}{4!}=210-5=205$

Answer 2

Resposta:

esxpressoes em termos de 5!/2!