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## 'N000ughty Thoughts' printed from http://nrich.maths.org/

Is it now well-known that factorial one hundred (written 100!)
has 24 noughts when written in full and that 1000! has 249
noughts?

Convince yourself that the above is true. Perhaps your
methodology will help you find the number of noughts in

10 000! and 100 000! or even 1 000 000!