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Factorial Trailing Zeroes
Bookmark
Input
n=5 (1 zero)
n=25 (6 zeroes)
n=100 (24 zeroes)
n=3 (0 zeroes)
n=30 (7 zeroes)
Custom
n
=
5
trailing zeroes = number of 5s in 5!
n
5
÷ 5
trailing zeroes = number of 5s in n! (2s are always plentiful)
count = 0
algo
master
.
io
Step:
Count trailing zeroes in 5!
0 / 5
Input
n=5 (1 zero)
n=25 (6 zeroes)
n=100 (24 zeroes)
n=3 (0 zeroes)
n=30 (7 zeroes)
Custom
n
=
5
0 / 5
trailing zeroes = number of 5s in 5!
n
5
÷ 5
trailing zeroes = number of 5s in n! (2s are always plentiful)
count = 0
algo
master
.
io
Step:
Count trailing zeroes in 5!
