Exams › SSC CGL (Prelims) › General

Find the value of 27^3 + 18^3 - 45^3 + 108.

1. -65502
2. 0
3. -46656
4. 1

Correct answer: -65502

Solution

Since 27+18 = 45, the expression a^3+b^3-(a+b)^3 equals -3ab(a+b) = -3*27*18*45 = -65610. Adding 108 gives -65502.

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