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UPSC CSE CSAT 2020 · Paper II (CSAT) · Question 19 · Logical & analytical reasoning

एक परिवार की दो पीढ़ियों के छः सदस्यों P, Q, R, S, T और U में तीन पुरुष और तीन महिलाएँ हैं। उनमें…

UPSC Civil Services (Preliminary) Examination 2020, General Studies Paper II (CSAT), Question 19 — Logical & analytical reasoning.

CSAT 2020 · Q19

Logical & analytical reasoning Medium

एक परिवार की दो पीढ़ियों के छः सदस्यों P, Q, R, S, T और U में तीन पुरुष और तीन महिलाएँ हैं। उनमें दो विवाहित जोड़े और दो अविवाहित सहोदर हैं। U, P की पुत्री है और Q, R की सास है। T अविवाहित पुरुष है और S एक पुरुष है। निम्नलिखित में से कौन-सा सही है?

Read this question in English

A family of two generations consisting of six members P, Q, R, S, T and U has three males and three females. There are two married couples and two unmarried siblings. U is P’s daughter and Q is R’s mother-in-law. T is an unmarried male and S is a male. Which one of the following is correct?

(a) R is U’s husband. · (b) R is S’s wife. · (c) S is unmarried. · (d) None of the above

उत्तर और व्याख्या · explanation in English

Answer: (b) R, S की पत्नी है।

Q, a mother-in-law, belongs to the older couple, so P (U's parent) is her husband. Their children are U, T and one married child whose spouse is R. With three males already P, T and S, R must be female and married to S.

  1. Q is R's mother-in-law, so Q is a woman of the older generation and R is married to Q's child.
  2. Two couples: the older couple and R with Q's child. U is P's daughter, so P is the older couple's other member — P is Q's husband (male).
  3. Males: P, T and S = three, so Q, U and R are the three females.
  4. R, a female, is married to a son of Q. T is unmarried, so that son is S — R is S's wife.
  5. The remaining two, U and T, are the unmarried siblings.
  6. Check (a): R is female, so cannot be U's husband; (c): S is married.

Remember · In family puzzles, fix the generations first, then use the male/female count to settle the remaining roles.

Question and answer: UPSC's official GS Paper II (2020, Series A) — paper ↗ · answer key ↗. Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). ·

Cite this question: UPSC CSE CSAT 2020, Q19 — minimalistias.com/pyqs/csat/2020/q19

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