Find this without the calculator

$\displaystyle (97^{98} + 98^{97}) : 5 $

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- May 2nd 2009, 02:39 PMbeq!xcalculate without the calculator
Find this without the calculator

$\displaystyle (97^{98} + 98^{97}) : 5 $ - May 2nd 2009, 11:56 PMProve It
- May 3rd 2009, 02:09 AMMoo
Using modular arithmetic, the remainder is 2.

So I don't quite see the interest of calculating the exact value of this... lol - May 3rd 2009, 02:09 AMbeq!x
can you solve me this please because i don't know nothing about modular arithmetic

and i am also interested in the result because this was at the school math competition! - May 3rd 2009, 03:17 AMmr fantastic
Is the competition finished? If it's not, then it's not fair to give help with this question. If it is, then you should ask if the solution is available.

And if you don't know anything about modular arithmetic, then it looks like the question is beyond your current level of mathematical knowledge. MHF is not designed to provide on-line lessons, it's up to you to learn about it yourself.

Thread closed (pm me if you want to discuss any of this).

**Edit:**Thread re-opened.