Friday, 27 May 2016

elementary number theory - Proof using exhaustion n41 is divisible by 5 where n is not divisible by 5.

The title pretty much states it.
Proof using exhaustion n41 is divisible by 5 where n is not divisible by 5.



Can anyone give me a hint how to approach this?

Do I need to consider separate case where n is odd and when n is even?



Solution: use division algorithm

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