Question

Evalúate. (n-1)! , where n=4

Answer 1

6

Explanation:

n ! = n(n - 1)(n - 2)..... × 3 × 2 × 1

Given

(n - 1) ! with n = 4, then

(4 - 1) !

= 3 ! = 3 × 2 × 1 = 6