Answer with Step-by-step explanation:
We have to calculate (n-1)!
We know that n!=n×(n-1)×(n-2)×...3×2×1
n=4 3!=3×2×1=6
n=6 5!=5×4×3×2×1=120
n=23 22!=22×21×20×19×18×17×16×...1
n=24 23!=23×22!
Answer:
6
Step-by-step explanation:
n = 4
(n - 1)!
(4 - 1)!
(3)!
3 times 2 times 1 = 6
