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Number Theory Level 2

What is the number of trailing zeroes in 15!


The answer is 3.

Sanjay Nagaraj by Sanjay Nagaraj , 19, USA

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2 solutions

Elmer Rodriguez
Jun 16, 2020

I divided 15 by 5 so the answer is 3.There are 3 trailing zeros.....

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Shiv Ram
Dec 15, 2014

15! There will be 3 zeros because of numbers 5,10,15.

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You should include the word 'trailing' otherwise it doesn't make sense. @sanjay Nagaraj

Anuj Shikarkhane - 6 years, 5 months ago

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Thanks, I have updated the problem accordingly.

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Calvin Lin Staff - 6 years, 5 months ago

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