Answer:
n = n(n-1)!
Explanation:
expanding the factorial we get;
1!=1.
2!=2x1.
3!=3x2x1.
4!=4x3x2x1.
5!=5x4x3x2x1.
we can rewrite the above factorials as:
1!=1
2!=2!
3!=2!x3
4!=4x3!
5!=5x4!
the pattern applies such that if we have n th number we get it's factorial as;
n = n(n-1)!
