UPSC 1997 › CSAT › Logical Reasoning

5 questions · 1997 · answers as per the UPSC key

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UPSC 1997 · Q133 · CSAT › Logical Reasoning · Save

In the series POQ, SRT, VUW, ?, the blank space refers to

(a) XYZ
(b) XZY
(c) YXZ
(d) YZX
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Answer: (c) YXZ
UPSC 1997 · Q142 · CSAT › Logical Reasoning · Save

Seven persons P, Q, R, S, T, U and V participate in and finish all the events of a series of swimming races. There are no ties at the finish of any of the events. V always finishes somewhere ahead of P. P always finishes somewhere ahead of Q. Either R finishes first and T finishes last or S finishes first and U or Q finishes last. If in a particular race V finished fifth, then which one of the following would be true?

(a) S finishes first
(b) R finishes second
(c) T finishes third
(d) R finishes fourth
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Answer: (a) S finishes first
UPSC 1997 · Q143 · CSAT › Logical Reasoning · Save

Consider the following:

I. Saxena, David, Jain and Kumar were District Collectors at places P, Q, R and S respectively in 1970. II. In 1972 they were transferred. Saxena and Jain interchanged places. Kumar and David also interchanged places. III. One year later in 1973 they were again transferred such that David and Jain interchanged places and Saxena and Kumar were also interchanged. What should be the next round of transfers so that all the four persons could have been posted at all the four places?

(a) Interchange Saxena and David as well as Jain and Kumar
(b) Interchange Saxena and Kumar as well as David and Jain
(c) Interchange David and Kumar as well as Saxena and Jain
(d) It is not possible for all the four persons to have been posted at all the four places
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Answer: (a) Interchange Saxena and David as well as Jain and Kumar
UPSC 1997 · Q146 · CSAT › Logical Reasoning · Save

Examine the following statements regarding a set of balls: I. All balls are black. II. All balls are white. III. Only some balls are black. IV. No balls are black. Assuming that the balls can only be black or white, which two statements given above can both be true, but cannot both be false?

Choose the correct answer from the codes given below:

(a) I and IV
(b) I and III
(c) II and III
(d) III and IV
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Answer: (a) I and IV
UPSC 1997 · Q149 · CSAT › Logical Reasoning · Save

Consider the figures given below:

(In the given sequence of figures, the figure that would logically appear at Sl. No. V is) The original figure is not available for this question.

(a) Figure A
(b) Figure B
(c) Figure C
(d) Figure D
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Answer: (a) Figure A
This question uses a table or figure from the original paper that is not reproduced here.