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)

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re: Puzzle Solution technical hint @ KS

| Comment 5 of 6 |

(In reply to Puzzle Solution by K Sengupta)

When editing more than once you can erase all previous remarks like ״Edited at 23:59” and leave only the last one, which matters

Posted by Ady TZIDON on 2022-03-25 04:28:22

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