Question

1) Calcule o valor de: a) C93 = b) C13.11 = c) A10,7 =

Answer 1

Resposta:

C9, 3 = 9!/3!(9-3)! = 9!/ 3!.6! = 9.8.7.6!/ 3!.6! =

9.8.7/ 3.2 = 84

C13, 11 = 13!/ 11!(13-11)! = 13!/ 11!.2! = 13.12.11!/ 11!.2! =

13.12/ 2.1 = 78

A10, 7 = 10!/ (10-7)! = 10!/ 3! = 10.9.8.7.6.5.4.3!/ 3! =

604.800