UPSC CSE Prelims CSAT (Paper II) previous year questions on Sets (Quantitative Ability), asked from 2011–2015, with answers. There are 7 questions in this post. Attempt each question, then click Show Answer to check.
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1] Out of 130 students appearing in an examination, 62 failed in English, 52 failed in Mathematics, whereas 24 failed in both English and Mathematics. The number of students who passed finally is [2015/36]
(a) 40
(b) 50
(c) 55
(d) 60
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Ans: (a) 40
2] In a group of persons travelling in a bus, 6 persons can speak Tamil, 15 can speak Hindi and 6 can speak Gujarati. In that group none can speak any other language. If 2 persons in the group can speak two languages only and one person can speak all the three languages, then how many persons are there in the group? [2015/37]
(a) 21
(b) 22
(c) 23
(d) 24
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Ans: (c) 23
3] There are 50 students admitted to a nursery class. Some students. can speak only English and some can speak only Hindi. 10 students can speak both English and Hindi. If the number of students who can speak English is 21, then how many students can speak Hindi, how many can speak only Hindi and how many can speak only English? [2014/19]
(a) 21, 11 and 29 respectively
(b) 28, 18 and 22 respectively
(c) 37, 27 and 13 respectively
(d) 39, 29 and 11 respectively
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Ans: (d) 39, 29 and 11 respectively
4] Figure
In the above figure, circle P represents hardworking people, circle Q represents intelligent people, Circle R represents truthful people and circle S represents honest people. Which region represents the people who are intelligent, honest, and truthful but not hardworking? [2012/48]
(a) 6
(b) 7
(c) 8
(d) 11
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Ans: (a) 6
Read the following passage and answer the 3 (three) items that follow:
In a survey regarding a proposed measure to be introduced, 2878 person took part of which 1652 were males. 1226 persons voted against the proposal of which 796 were males. 1425 persons vote for the proposal. 196 females were undecided.
5] How many females voted for the proposal? [2011/60]
(a) 430
(b) 600
(c) 624
(d) 640
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Ans: (b) 600
6] How many males were undecided? [2011/61]
(a) 31
(b) 227
(c) 426
(d) 581
Show Answer
Ans: (a) 31
7] How many females were not in favour the proposal? [2011/62]
(a) 430
(b) 496
(c) 586
(d) 1226
Show Answer
Ans: (a) 430
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