What is N factorial

Answer 1

N factorial in mathematics is represented as N!
N! = N*(N-1)*(N-2)....*3*2*1
So
5!=5*4*3*2*1=120
0!=1(by definition of factorial)
Factorial is not defined for -ve numbers.

Answer 2

N factorial( or N!) is the product of all the positive numbers less or equal to N.
N! =N*(N-1)*(N-2).......*1
Example : 6!=6*5*4*3*2*1=720
Ps: N must be a positive number and 0!=1

Answer 3

thank u very much.. but how can u draw N factorial on flow chat..please help me