factorial

the factorial of a number is the product of all positive integers up to that number.

calculating the factorial can be done using recursion or iteration.

in mathematics, the factorial function is denoted by an exclamation mark.

the factorial of zero is defined to be one.

factorial calculations are essential in combinatorics.

understanding factorials is important for probability theory.

you can use a calculator to find the factorial of larger numbers.

factorial growth rates increase very rapidly.

many programming languages have built-in functions to calculate factorials.

the factorial of a negative number is not defined.