नीचे दिए गए प्रश्न और दो कथनों पर विचार कीजिए :
- प्रश्न: क्या Z, X का भाई है?
- कथन–1: Y का भाई X है और Z का भाई Y है।
- कथन–2: X, Y और Z सहोदर भाई/बहन हैं।
उपर्युक्त प्रश्न और कथनों के बारे में निम्नलिखित में से कौन-सा एक सही है?
Read this question in English
Consider the Question and two Statements given below:
Question. Is Z brother of X?
Statement–1. X is a brother of Y and Y is a brother of Z.
Statement–2. X, Y and Z are siblings.
Which one of the following is correct in respect of the Question and the Statements?
(a) Statement–1 alone is sufficient to answer the Question · (b) Statement–2 alone is sufficient to answer the Question · (c) Both Statement–1 and Statement–2 are sufficient to answer the Question · (d) Both Statement–1 and Statement–2 are not sufficient to answer the Question
उत्तर और व्याख्या · explanation in English
Answer: (d) कथन–1 और कथन–2, दोनों, प्रश्न का उत्तर देने के लिए पर्याप्त नहीं हैं
Both statements tell us X, Y and Z are siblings, and Statement–1 shows X and Y are male, but nothing tells us whether Z is male. Z could be X’s brother or sister, so even together the statements are not sufficient.
- Statement–1: X is a brother of Y and Y is a brother of Z, so X and Y are male and all three are siblings. Z’s gender is not given.
- Statement–2: X, Y and Z are siblings — again Z’s gender is not given.
- Together they still do not say whether Z is male, so Z may be X’s brother or X’s sister.
- Neither statement alone nor both together can answer the question.
Remember · ‘Is Z a brother?’ needs Z’s gender; statements that fix only other people’s gender cannot answer it.
Question and answer: UPSC's official GS Paper II (2022, Series A) — paper ↗ · answer key ↗. Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). ·