2020 CSAT, all questions

UPSC Prelims 2020 · CSAT

Question 49: Logical Reasoning and Mental Ability

What is the missing term @ in the following? ACPQ : BESU :: MNGI : @

aNPJL
bNOJM
cNPIL
dNPJM

AnswerUPSC’s answer is (d).

Compare letter by letter in the first pair. A to B is +1, C to E is +2, P to S is +3, Q to U is +4. Apply the same steps to MNGI: M + 1 = N, N + 2 = P, G + 3 = J, I + 4 = M. The answer is NPJM.

Why each option is right or wrong
  • (a) NPJL ends in L, which is I + 3; the last step must be +4.
  • (b) NOJM has O in second place; N + 2 is P.
  • (c) NPIL gets the last two letters wrong; G + 3 is J and I + 4 is M.
  • (d) Right: N, P, J, M.

Answer: UPSC’s key. Explanation: written by UPSC Grade, not by UPSC.

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Source: UPSC, Civil Services (Preliminary) Examination 2020, General Studies Paper II (CSAT), Series A. The paper on upsc.gov.in.