perplexus.info :: Just Math : Non

Non - Zero Digit II (Posted on 2012-02-05)

Reading from left to right, what is the last non - zero digit in ((20!)!)!? (That is, the factorial of factorial of 20 factorial).

No Solution Yet Submitted by K Sengupta

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| Comment 6 of 7 |

See here

and here

Posted by Benny on 2012-02-07 04:52:18

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