Question

Question #43321

Answer 1

See explanation.

Explanation:

If `X` is a natural number greater than `1` then the expression can be written as:

`(X-2) ! =1xx2xx3xx...xx(X-2)`

You can also write `(X-2)!` in terms of `X!`

The definition of `X!` is:

`X! = 1xx2xx3xx...xx(X-2)xx(X-1)xxX` which can be expressed as:

`X! = (X-2)!xx(X-1)xxX`, so we can write `(X-2)!` as:

`(X-2)! = (X!)/(Xxx(X-1))`