Question

Simplifique as expressões: ME AJUDEM TO DESESPERADA

a) 8!/9!
b) 6!/5!2!
c) 8!/4!6!
d) 2!4!/4!4!

Answer 1

a)

$\frac{8!}{9!}\\\\ \frac{8!}{9*8!}\\\\ \boxed{\frac{1}{9}}$

b)

$\frac{6!}{5!2!}\\\\ \frac{6*5!}{5!2!}\\\\ \frac{6}{2!}\\\\ \boxed{3}$

c)

$\frac{8!}{4!6!}\\\\ \frac{8*7*6!}{4!6!}\\\\ \frac{56}{24}\\\\ \boxed{\frac{7}{3}}$

d)

$\frac{2!4!}{4!4!}\\\\ \frac{2!}{4!}\\\\ \frac{2!}{4*3*2!}\\\\ \boxed{\frac{1}{12}}$