Question

Python math.factorial() Method

Answer 1

The math.factorial() method in Python returns the factorial of a given integer. The factorial of a non-negative integer n, denoted by n!, is the product of all positive integers less than or equal to n.

The math.factorial(n) method returns the factorial of the integer n. If n is negative, a ValueError is raised. If n is not an integer, a TypeError is raised.

Here's an example usage of the math.factorial() method:

import math

n = 5
result = math.factorial(n)

print(result) # Output: 120
 

In this example, we import the math module and calculate the factorial of 5 using math.factorial(). The result is then printed to the console.

Note that the factorial of 0 is 1.