SarkariPYQ

SSC CHSL 2023 PYQ — Question 65

SSC CHSL - 09 Aug 2023 - Shift 4 • Quantitative Aptitude • Q65

Back to paper

If  a + 1a\frac{1}{a} = 5, then determine the value of a3 + 1a3\frac{1}{a^3}

Show answer & explanation

Correct answer: D

Explanation

The correct answer is Option 4 i.e 110.

a + 1/a = 5

a3 + 1/a3 = 53 - 3(5) = 125 - 15 = 110