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![[Post New]](/templates/default/images/icon_minipost_new.gif) 9 Mar 2008 14:11:33 IST
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1835 = 7x262 + 1
1986= 7 x 284 - 2
Expand using binomial theorem , the remainder will be same as
1 1910 + ( -2 ) 2061
= 1 + ( -8 ) 687
= 1 + (- 7 -1) 687
= 1 - 1 = 0
so the remainder when divided by 7 is 0.
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this reply: 40 points
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