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Round Table Seating and Chair Movement

CAT 2025 Slot 1 · Data Interpretation & Logical Reasoning · Medium · Logical Reasoning

This is a medium Data Interpretation & Logical Reasoning question set from the CAT 2025 Slot 1 paper. It tests Logical Reasoning. The full answer key and a step-by-step explanation are below — try it yourself first, then reveal the solution.

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Passage / data set

A round table has seven chairs around it. The chairs are numbered 1 through 7 in a clockwise direction. Four friends, Aslam, Bashir, Chhavi, and Davies, sit on four of the chairs. In the starting position, Aslam and Chhavi are sitting next to each other, while for Bashir as well as Davies, there are empty chairs on either side of the chairs that are sitting on.

The friends take turns moving either clockwise or counter clockwise from their chair. The friend who has to move in a turn occupies the first empty chair in whichever direction (s)he chooses to move. Aslam moves first (Turn 1), followed by Bashir, Chhavi, and Davies (Turns 2, 3, and 4, respectively). Then Aslam moves again followed by Bashir, and Chhavi (Turns 5, 6, and 7, respectively).

The following information is known.

  1. The four friends occupy adjacent chairs only at the end of Turn 2 and Turn 6.
  2. Davies occupies Chair 2 after Turn 1 and Chair 4 after Turn 5, and Chhavi occupies Chair 7 after Turn 2.

Question 1 of 4

What is the number of the chair initially occupied by Bashir?

Answer

5

Explanation

Tracing the initial configuration with empty chairs between individuals and the given post-turn chair positions shows Bashir starts on Chair 5.

Question 2 of 4

Who sits on the chair numbered 4 at the end of Turn 3?

  1. A.

    Bashir

  2. B.

    Chhavi

  3. C.

    Davies

  4. D.

    No one

Answer

D

Explanation

At the end of Turn 3, Chair 4 is vacant.

Why the other options are wrong

  • A.Bashir — does not satisfy the condition asked in this question, so it is not the correct answer.
  • B.Chhavi — does not satisfy the condition asked in this question, so it is not the correct answer.
  • C.Davies — does not satisfy the condition asked in this question, so it is not the correct answer.
  • D.No one — does not satisfy the condition asked in this question, so it is not the correct answer.

Question 3 of 4

Which of the chairs are occupied at the end of Turn 6?

  1. A.

    Chairs numbered 1, 2, 6, and 7

  2. B.

    Chairs numbered 2, 3, 4, and 5

  3. C.

    Chairs numbered 1, 2, 3, and 4

  4. D.

    Chairs numbered 4, 5, 6, and 7

Answer

B

Explanation

Condition 1 specifies that 4 friends occupy adjacent chairs at Turn 6. The specific positions work out to 2, 3, 4, and 5.

Question 4 of 4

Which of the following BEST describes the friends sitting on chairs adjacent to the one occupied by Bashir at the end of Turn 7?

  1. A.

    Davies only

  2. B.

    Chhavi and Davies

  3. C.

    Aslam and Chhavi

  4. D.

    Chhavi only

Answer

D

Explanation

At the end of Turn 7, Bashir's adjacent occupied chair belongs to Chhavi only.

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