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SSC Selection Post 2022 PYQ — Question 54

SSC Selection Post - Graduation Level - 4 Aug 2022 - Shift 2 • Quantitative Aptitude • Q54

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If x - 1x\frac{1}{x}= 154\frac{15}{4}, find the valueof x + 1x \frac{1}{x}

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Correct answer: D

Explanation

The correct answer is Option 4 i.e. 174\frac{17}{4}.

x - 1/x = 15/4

⇒ x + 1/x = √[(15/4)2 + 4]

= √[225/16 + 4]

= √(289/4)

= 17/4