Find the remainder when 22^3+23^3+24^3+25^3+26^3..............88^3 is divided by 110.
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We need to find 2 2 3 + 2 3 3 + ⋯ + 5 5 3 + ⋯ + 8 7 3 + 8 8 3 ( m o d 1 1 0 )
Note that a + b divides a n + b n for every odd n , therefore combining extreme terms, they will be congruent to 0 ( m o d 1 1 0 ) , however , the middle-most term which is 5 5 3 , will be left uncombined , and 5 5 3 ≡ 5 5 ( m o d 1 1 0 ) , therefore whole sum will leave a remainder of 5 5 when divided by 1 1 0