Factorial digit sum
First read the problem description.
from math import factorial
s = 0
n = factorial(100)
while n > 0:
s += n % 10
n //= 10Source code of the solution(s):
Source code of the solution(s):
from math import factorial
s = 0
n = factorial(100)
while n > 0:
s += n % 10
n //= 10