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UPSC Prelims 2000

146 questions, in the order they were asked.

2000 · Q135Science & TechnologyLogical Reasoning & Puzzlesdifficult

Examine the following relationships among members of a family of six persons A, B, C, D, E and F. I. The number of males equals that of females. II. A and E are sons of F. III. D is the mother of two, one boy and one girl. IV. B is the son of A. V. There is only one married couple in the family at present. Which one of the following inferences can be drawn from the above?

  1. (a)A, B and C are all females
  2. (b)A is the husband of D
  3. (c)E and F are children of D
  4. (d)D is the grand-daughter of F
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Official answer(c) E and F are children of D

2000 · Q146Science & TechnologyLogical Reasoning & Puzzlesmoderate

The following figure represents time vs. learning curves of two students, Q and R, for learning a Mathematics lesson. Which one of the following inferences can be drawn from the graph?

  1. (a)R started slowly in the beginning but got ahead of Q to complete learning the lesson
  2. (b)Q started slowly and finished learning the lesson earlier than R
  3. (c)R was always faster than Q in learning Mathematics
  4. (d)Q was always faster than R in learning Mathematics
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Official answer(b) Q started slowly and finished learning the lesson earlier than R