Which of the following divides : 117^3 + 116^3 - 112^3 - 111^3 ?
(A) 17 (B) 31 (C) 5 (D) 41
(with full explanation)
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Step-by-step explanation:
117^3 + 116^3 - 112^3 - 111^3
= (100+7)^3+(100+16)^3-(100+12)^3-(100+11)^3
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