Question

Calcule o fatorial de
5!/3!
(21!.16!)/(22!.14!)
4!/2!
5!/3
2!/7!

Answer 1

5!/3! = 5.4.3!/3!= 5.4 = 20

(21!.16!)/(22!.14!)=

21!/22! . 16!/14! =

21!/22.21! . 16.15.14!/14! =

240/22 => :(2/2) = 120/11

4!/2!= 4.3.2!/2! = 4.3 = 12

5!/3 = 120/3 = 40

2!/7! = 2/5040 =1/2520