Question

what are factorials?​

Answer 1

Answer:

Factorial is denoted by the symbol "!" and is defined as follows.

n!= Product of n consecutive natural numbers = n*(n-1)*(n-2)*....*3*2*1

Examples: 6!= 6*5*4*3*2*1=720

5!=5*4*3*2*1=120

Note: 0! is defined as 1.

Answer 2

Answer:

the product of a series of factors in an arithmetical progression.