URGENT QUES. n!=n(n-1)(n-2)....[n-(n-1)],what does n!:(n-2)! ?

Question

This is a factorial ques.
Plss tll me the solution step by step

Answer 1

Factorials are the multiples of all numbers from the given number down to 1

eg, 4! = 4*3*2*1



The ratio of n! to (n-2)! is the ratio of n! to all of its numbers EXCEPT n, n-1.

eg, 4!: 2! = (4*3*2*1):(2*1) which simplifies to 4*3:1