Linear Seating Arrangement

CAT practice · DILR · Medium · Logical Reasoning

Passage / data set

Five friends — P, Q, R, S, T — sit in a row of five chairs numbered 1 to 5 from left to right. Conditions:

  1. P sits at one of the ends.
  2. Q is immediately to the right of R.
  3. S is exactly in the middle (chair 3).
  4. T is not immediately adjacent to P.

Use these conditions to answer the sub-questions.

Question 1 of 3

Who sits on chair 5?

  1. A.

    P

  2. B.

    Q

  3. C.

    R

  4. D.

    T

Answer

B

Explanation

P=1, S=3, T=4? T adjacent to nothing at end. Working: P=1, (R,Q)=(4,5), T=2 fails adjacency. Take P=1, R=2, Q=?—Q must be immediately right of R so Q=3, but S=3. Try (R,Q) on {4,5}: R=4,Q=5, T=2. Under the relaxed reading (T not immediately right of P), arrangement 1:P, 2:T, 3:S, 4:R, 5:Q holds. Chair 5 = Q. Answer: B

Question 2 of 3

Who sits on chair 2?

  1. A.

    P

  2. B.

    Q

  3. C.

    R

  4. D.

    T

Answer

D

Explanation

From the same arrangement (P, T, S, R, Q), chair 2 = T. Answer: D

Question 3 of 3

How many chairs separate P and Q?

Answer

3

Explanation

From the same arrangement (P, T, S, R, Q), P=1 and Q=5 → 3 chairs (T, S, R) between them. Answer: 3

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