छः व्याख्यान A, B, C, D, E और F, जो प्रत्येक एक घंटे की अवधि के हैं, प्रातः 8:00 बजे और अपराह्न 2:00 बजे के बीच नियत किए गए हैं।
नीचे दिए गए प्रश्न और दो कथनों पर विचार कीजिए :
- प्रश्न: तीसरी व्याख्यान-अवधि (पीरियड) में कौन-सा व्याख्यान है?
- कथन–1: व्याख्यान F के ठीक पहले व्याख्यान A और ठीक बाद में व्याख्यान C हुआ।
- कथन–2: व्याख्यान B के बाद कोई व्याख्यान नहीं है।
निम्नलिखित में से कौन-सा एक उपर्युक्त प्रश्न और कथनों के बारे में सही है?
Read this question in English
Six lectures A, B, C, D, E and F, each of one hour duration, are scheduled between 8:00 a.m. and 2:00 p.m.
Consider the Question and two Statements given below:
Question. Which lecture is in the third period?
Statement–1. Lecture F is preceded by A and followed by C.
Statement–2. There is no lecture after lecture B.
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
With B fixed in the last period, the block A–F–C can still sit in periods 1–3, 2–4 or 3–5, so the third period could hold C, F or A. Even together the statements do not fix it.
- There are six one-hour periods from 8:00 a.m. to 2:00 p.m., one lecture in each.
- Statement–1 alone: A, F, C come in that order, but the block can be anywhere. Not sufficient.
- Statement–2 alone: B is in the 6th period; the 3rd period is still open. Not sufficient.
- Together: A–F–C can fill periods 1–3, 2–4 or 3–5 (D and E take the rest), so the 3rd period can be C, F or A.
- So both statements together are not sufficient.
Remember · Scheduling data sufficiency: slide the fixed block through every free position before calling it sufficient.
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). ·