How Many Zeroes Are There?

There are many zeroes, but how would you count them all?

The factorial of a non-negative integer, n!, is defined as the product of all positive integers less than or equal to n.

As an example, 3! = 6.

How does one find out the number of trailing zeroes of the number 1000! ?

I recommend you pause the article, grab your pen and paper, and give this a go. When you are ready, keep reading for the solution! ✒️

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