2025 CSAT, all questions

UPSC Prelims 2025 · CSAT

Question 49: Logical Reasoning and Mental Ability

A mobile phone has been stolen. There are 3 suspects P, Q and R. They were questioned knowing that only one of them is guilty. Their responses are as follows :

  1. PI did not steal. Q stole it.
  2. QR did not steal. I did not steal.
  3. RI did not steal. I do not know who did it.

Who stole the mobile phone ?

aP
bQ
cR
dCannot be concluded

UPSC's 2025 key was reported published in May 2026, but no file was found on upsc.gov.in or in the Wayback Machine. The 2025 papers can be browsed, not scored.

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Source: UPSC, Civil Services (Preliminary) Examination 2025, General Studies Paper II (CSAT), Series A. The paper on upsc.gov.in.