Question 1175733
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Suppose that N=85^200 + 120^200. Find the remainder when you divide N by 7
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<pre>
Notice that  85 = 12*7 + 1  gives the remainder 1, when divided by 7.


Hence, the number 85 in any integer positive degree gives the remainder 1, when divided by 7.


In particular,  85^200  gives the remainder 1, when divided by 7.




Next, notice that  120 = 17*7 + 1.


The same arguments prove that  120^200  gives the remainder 1, when divided by 7.


So the <U>ANSWER</U> to the problem's question is 1 + 1 = 2.
</pre>


Solved.



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How @MathLover1 treats the problem, &nbsp;shows that she &nbsp;NEITHER &nbsp;understands the subject 

NOR &nbsp;knows how to approach the question.