Question

a) 15!/12!
b) 4!/2!
c) 12!/9!

Answer 1

Resposta:

a) 15×14×13×12!/12! = 15×14×13 = 2730

b) 4×3×2!/2! = 4×3 = 12

c) 12×11×10×9!/9! = 12×11×10 = 1320

Answer 2

Resposta:

a) 2730

b) 12

c) 1320