2025 CSAT, all questions

UPSC Prelims 2025 · CSAT

Question 55: Logical Reasoning and Mental Ability

P is the brother of Q and R. S is R's mother. T is P's father. How many of the following statements are definitely true ?

  1. IS and T are a couple.
  2. IIQ is T's son.
  3. IIIT is Q's father.
  4. IVS is P's mother.
  5. VR is T's daughter.
  6. VIP is S's son.

Select the correct answer using the code given below :

aOnly two
bOnly three
cOnly four
dOnly five

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.