perplexus.info :: Just Math : A multiple of 42

A multiple of 42 (Posted on 2022-03-23)

Prove that
n^7-n
is divisible by 42
for any integer n.

See The Solution Submitted by Ady TZIDON

Rating: 5.0000 (1 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)

re(2): Puzzle Solution technical hint @ KS

Comment 6 of 6 |

Ty for the suggestion, AT

However, after two days editing afresh would look odd in the edit-timestamp.

But, Wilco in future regarding this issue.

Posted by K Sengupta on 2022-03-25 08:17:23

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