(In reply to re: solution
Are a quarter of the numbers be divisible by 4? If so, why should it be every other number divisible by 2? Are one-seventh of the numbers M^M+1 divisible by 7? Is it every seventh number?
The answers to these may be 'yes' but I think the proof is needed. So I did the math to prove it.
Posted by Jer
on 2014-05-02 12:39:33