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UPSC PYQs: Set Logic

Review complete published questions grouped by topic: Set Logic.

6 published questions

Other qualifying topic groups

Questions

The number of persons who read magazine X only is thrice the number of persons who read magazine Y, and the number who read magazine Y only is thrice the number who read magazine X. Conclusions: 1. Those reading both are twice those reading only X. 2. Total readers of either or both are twice those reading both. Which conclusion(s) follow?2015 · Prelims CSAT · CSAT · Set Logic
In a bus group, 6 persons speak Tamil, 15 Hindi and 6 Gujarati. Two persons speak exactly two languages and one speaks all three; nobody speaks any other language. How many persons are in the group?2015 · Prelims CSAT · CSAT · Set Logic
Out of 130 students, 62 failed English, 52 failed Mathematics and 24 failed both. How many passed finally?2015 · Prelims CSAT · CSAT · Set Logic
In a town, 45% read magazine A, 55% B, 40% C, 30% A and B, 15% B and C, 25% A and C, and 10% all three. What percentage read none?2015 · Prelims CSAT · CSAT · Set Logic
There are 50 nursery students. Ten speak both English and Hindi. Twenty-one can speak English. How many can speak Hindi, only Hindi and only English respectively?2014 · Prelims CSAT · CSAT · Set Logic
Of 120 musicians, 5% play all three of guitar, violin and flute; 30 play exactly two; 40 play guitar alone. How many play violin alone or flute alone in total?2014 · Prelims CSAT · CSAT · Set Logic