UPSC Prelims 2004 Q100: Science & Technology – Logical Reasoning & Puzzles
- (a) Published by Dev Publishers
- (b) Published by Bharat Publishers
- (c) Edited by Gurbakhsh
- (d) Published by Charan Publishers
Answer: (b) Published by Bharat Publishers
Explanation
Logic puzzle: the films magazine
| Clue | Deduction |
|---|---|
| Films | Edited by Swami (iii) |
| Publisher options | Not Charan (iii), not Aryan (politics), not Dev (Feroz's magazine) |
| So | Published by Bharat Publishers |
Four magazines on politics, sports, science and films are edited by Feroz, Gurbaksh, Swami and Ila and published by Aryan, Bharat, Charan and Dev Publishers (not necessarily in that order), with these clues: (i) Dev Publishers published the magazine edited by Feroz; (ii) the politics magazine is published by Aryan; (iii) the films magazine is edited by Swami and is not published by Charan; (iv) the science magazine is edited by Ila. The films magazine, edited by Swami, cannot be published by Charan, Aryan or Dev, so it is published by Bharat Publishers.
Answer: (b) Published by Bharat Publishers.
Why each option is right or wrong
- (a) Incorrect. Dev publishes the sports magazine.
- (b) CORRECT. Bharat publishes the films magazine.
- (c) Incorrect. Gurbaksh edits the politics magazine.
- (d) Incorrect. The clue says films is not published by Charan.
Key point
Remove each publisher using the clues; the one left is the answer.
Remember
The films magazine is published by Bharat Publishers.
Common mistakes
- Choosing Charan, which clue (iii) forbids.
- Forgetting that Aryan is fixed to politics.
- Mixing up the editors and the publishers.
Exam tip
Films magazine: edited by Swami, published by Bharat Publishers.
Sources
- R. S. Aggarwal — A Modern Approach to Verbal and Non-Verbal Reasoning (Puzzle Test)
- Arun Sharma — How to Prepare for Logical Reasoning for the CAT (arrangement and matching puzzles)