UPSC 2006 › CSAT › Logical Reasoning

4 questions · 2006 · answers as per the UPSC key

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UPSC 2006 · Q61 · CSAT › Logical Reasoning · Save

P, Q, R, S and T reside in a 5-storeyed (Ground + 4) building, and each of them resides on a separate floor. Further,

  1. T does not reside on the topmost floor.
  2. Q does not reside on the ground floor.
  3. S resides on one storey above that of P and one storey below that of R. To know as to which of the 5 persons resides on the ground floor which of the above statements are sufficient / insufficient?
(a) 1 and 3 are sufficient
(b) 2 and 3 are sufficient
(c) 1, 2 and 3 are sufficient
(d) 1, 2 & 3 are insufficient
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Answer: (d) 1, 2 & 3 are insufficient
UPSC 2006 · Q69 · CSAT › Logical Reasoning · Save

Refer to the three figures I, II and III in which numbers are arranged in squares. What is the value of X in figure III?

(a) 4
(b) 16
(c) 25
(d) 36
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Answer: (c) 25
This question uses a table or figure from the original paper that is not reproduced here.
UPSC 2006 · Q77 · CSAT › Logical Reasoning · Save

Each of the six faces of a cube is numbered by one of the six digits from 1 to 6. This cube is shown in its four different positions in the figures I, II, III and IV. Consider the following statements:

  1. Figures II and III are sufficient to know as to which face is opposite to the face numbered 6.
  2. Figures II and III are sufficient to know as to which face is opposite to the face numbered 4.
  3. Figures I and IV are sufficient to know as to which face is opposite to the face numbered 4.

Which of the statements given above are correct? The original figure is not available for this question.

(a) 1 and 3, only
(b) 1 and 2, only
(c) 2 and 3, only
(d) 1, 2 and 3
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Answer: (d) 1, 2 and 3
This question uses a table or figure from the original paper that is not reproduced here.
UPSC 2006 · Q103 · CSAT › Logical Reasoning · Save

In an office, the number of persons who take tea is twice the number of persons who take only coffee. The number of persons who take coffee is twice the number of persons who take only tea. Consider the following statements:

  1. The sum of the number of persons who take either tea or coffee or both is four times the number of persons who take both coffee and tea.
  2. The sum of the number of persons who take only coffee and those who take only tea is twice the number of persons who take both coffee and tea.

Which of the statements given above is/are correct?

(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
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Answer: (b) 2 only