The correct option is
A 5!Factorial:–––––––––––––
The factorial of a number is the product of all the natural numbers from
1 upto the number itself. Symbolically, factorial can be represented as "
!". So,
n factorial is the product of the first
n natural numbers and is represented as
n!
For example, 3 factorial, that is,
3! can be written as:
3!=3×2×1=6.
Hence, out of all the given options, only option (a.), i.e,
5! denotes a factorial.