SarkariPYQ

SSC CPO 2022 PYQ — Question 110

SSC CPO - 11 Nov 2022 - Shift 3 • Quantitative Aptitude • Q110

Back to paper

If a+1a=P2a+ {{1} \over a}=P^2 , then find a2+1a2a^2+ {{1} \over a^2}.

Show answer & explanation

Correct answer: C

Explanation

The correct answer is option 3 i.e.  P4 - 2

Given that

If a+1a=P2a+ {{1} \over a}=P^2 ,

Sqauring both sides

⇒ a2 + 1/a2 + 2 = P4

⇒ a2 + 1/a2 = P4 - 2