Allied & ICAR Exam Bank • ALLIED_2044 NAT • 1 Mark

Section 8: General Aptitude

Quantitative Aptitude

Subtopic: Numerical Computation

Question Statement:

If $x - \frac{1}{x} = 5$, the value of $x^2 + \frac{1}{x^2}$ is:

Answer Key:

27

Step-by-Step Solution & Explanation

$x^2 + 1/x^2 = (x - 1/x)^2 + 2 = 25 + 2 = 27$.
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