Question

What is the value of (n!) by formula?

Answer 1

Please see below.

Explanation:

`n` factorial is given by

`n! =nxx(n-1)xx(n-2)xx........xx3xx2xx1`

it can also be written as

`n! = nxx(n-1)!`

`1! =1`

`2! =2xx1=2`

`3! = 3xx2xx1=6`

`4! = 4xx3xx2xx1=24`

`5! =5xx4xx3xx2xx1=120`

`6! =6xx5xx4xx3xx2xx1=720` and so on.