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SSC CGL 2025 PYQ — Question 52

SSC CGL - 14 Sep 2025 - Shift 1 • Quantitative Aptitude • Q52

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Given, x+1x=3x + \frac{1}{x} = 3 find the value of x3+1x3x^3 + \frac{1}{x^3}.

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Correct answer: C

Explanation

The correct answer is option 3 i.e. 18

x3 + 1/x3 = (x + 1/x)3 - 3(x + 1/x)

= 33 - 3 × 3

= 27 - 9

= 18