Trailing Zeros in factorial
Number Theory
Level
pending
10! = 3628800; The number of trailing zeros on the end of 10! = 2
Find the number of trailing zeros on the end of 10000!
The answer is 2499.
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1 solution
no of trailing zero in X! is n = 1 ∑ ∞ ⌊ 5 n x ⌋