Question

Calcule. N !
________=10
5.( N- 1) !

A) N= 2. B) N= 12 C) N= 32 D) N= 50

Answer 1

n! = n.(n-1)!

[n.(n-1)!]÷[5.(n-1)!] = 10

$\frac{n \times 1}{1} = 50 \\ n = 50$
Resposta: Letra D