perplexus.info :: Just Math : Possibility of restoring

Possibility of restoring (Posted on 2015-02-10)

A string of digits S represents a decimal expression of n!
A certain digit of S is replaced by x and you are requested to restore the erased digit.

For what values of n (below 100) can this task not always be accomplished?

No Solution Yet Submitted by Ady TZIDON

Rating: 3.0000 (1 votes)

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Answer only (spoiler)

Comment 1 of 1

0,1,2,3,5,6

Posted by Steve Herman on 2015-02-10 10:08:22

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