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Question

Anamika, Gopal, Nischal, Vanmayi, Shresta and Sripad are sitting in a straight line facing the north. Nischal is to the immediate left of Gopal. Shresta is between Anamika and Sripad. Sripad is at the second place from the right end. Four persons are sitting between Nischal and Vanmayi. If Gopal and Sripad interchange their positions, then who will be sitting between Vanmayi and Shresta?

The correct answer is

Gopal

Understanding the Linear Seating Arrangement Puzzle

This question is a linear seating arrangement puzzle. We have six people sitting in a straight line, all facing the north. We are given several clues about their relative positions and one fixed position. We need to determine the initial arrangement, then simulate a position swap between two people, and finally identify who is sitting between two specific people in the final arrangement.

The key is to use the given clues systematically to deduce the position of each person in the line.

Deducing the Initial Seating Arrangement

Let's break down the clues and build the arrangement step-by-step for the six positions, numbered 1 to 6 from left to right as they face North:

  1. Sripad is at the second place from the right end.
    • The right end is position 6.
    • The second place from the right end is position 5.
    • So, Sripad is at position 5.
    • Arrangement so far: _ _ _ _ Sripad _
    • Positions:           1 2 3 4 5       6
  2. Shresta is between Anamika and Sripad.
    • Sripad is at position 5.
    • For Shresta to be between Anamika and Sripad, they must be in consecutive positions.
    • The possible positions for Anamika and Shresta are 3 and 4, or 4 and 3.
    • If Anamika is at 4 and Shresta at 3, the sequence would be _ _ Shresta Anamika Sripad _. This doesn't fit "Shresta is *between* Anamika and Sripad" in a linear sense unless Anamika is on one side and Sripad on the other with Shresta in the middle. The phrasing implies they are adjacent or close. Given Sripad is at 5, the only way Shresta can be *directly* between them is if Anamika is at 3 and Shresta at 4, forming A-S-Sripad (positions 3-4-5). If Anamika were at 6, Shresta would need to be at 5 (which is Sripad) or 4 to be between Sripad (5) and Anamika (6). Shresta at 4 and Anamika at 6 fits the description of Shresta being between them, but doesn't use positions 3,4,5 consecutively. Let's assume the most common interpretation for "between" in seating arrangements involving 3 people is consecutive positions: Anamika Shresta Sripad or Sripad Shresta Anamika. Since Sripad is at 5, the sequence must be Anamika (3) Shresta (4) Sripad (5).
    • So, Anamika is at position 3 and Shresta is at position 4.
    • Arrangement so far: _ _ Anamika Shresta Sripad _
    • Positions:            1 2 3        4        5       6
  3. Nischal is to the immediate left of Gopal.
    • This means they are sitting next to each other in the order Nischal then Gopal (N G).
    • Looking at the current arrangement, the empty spots are 1, 2, and 6.
    • The pair (N G) can only fit into positions 1 and 2.
    • If Nischal is at 1, Gopal is at 2.
    • Arrangement so far: Nischal Gopal Anamika Shresta Sripad _
    • Positions:            1       2       3        4        5       6
  4. Four persons are sitting between Nischal and Vanmayi.
    • Nischal is at position 1.
    • For four persons to be between Nischal and Vanmayi, Vanmayi must be at position 1 + 4 + 1 = 6. (N - P1 - P2 - P3 - P4 - V).
    • The only remaining empty position is 6. This fits Vanmayi.
    • So, Vanmayi is at position 6.

Let's verify the complete initial arrangement against all clues:

Position 1 2 3 4 5 6
Person Nischal Gopal Anamika Shresta Sripad Vanmayi

  • Nischal is to the immediate left of Gopal: Nischal (1) is left of Gopal (2). Correct.
  • Shresta is between Anamika and Sripad: Anamika (3), Shresta (4), Sripad (5). Correct.
  • Sripad is at the second place from the right end: Sripad (5) is 2nd from the right end (6). Correct.
  • Four persons are sitting between Nischal and Vanmayi: Nischal (1) and Vanmayi (6). Persons between them are Gopal (2), Anamika (3), Shresta (4), Sripad (5) - that's 4 people. Correct.

The initial arrangement is confirmed: Nischal, Gopal, Anamika, Shresta, Sripad, Vanmayi.

Performing the Interchange

The question states that Gopal and Sripad interchange their positions.

  • Gopal's initial position is 2.
  • Sripad's initial position is 5.
  • After interchange, Gopal will be at position 5, and Sripad will be at position 2.
  • Other persons remain in their original positions.

The new arrangement is:

Position 1 2 3 4 5 6
Person Nischal Sripad Anamika Shresta Gopal Vanmayi

Finding the Person Between Vanmayi and Shresta

In the new arrangement, we need to find who is sitting between Vanmayi and Shresta.

  • Vanmayi is at position 6.
  • Shresta is at position 4.
  • Looking at the new arrangement (Nischal, Sripad, Anamika, Shresta, Gopal, Vanmayi), the person sitting between positions 4 (Shresta) and 6 (Vanmayi) is the person at position 5.
  • The person at position 5 is Gopal.

Therefore, after Gopal and Sripad interchange their positions, Gopal will be sitting between Vanmayi and Shresta.

Revision Table: Key Information at a Glance

Stage Positions 1-6 (Left to Right)
Initial Arrangement Nischal, Gopal, Anamika, Shresta, Sripad, Vanmayi
Interchange (Gopal <--> Sripad) Nischal, Sripad, Anamika, Shresta, Gopal, Vanmayi
Vanmayi's position (New) 6
Shresta's position (New) 4
Person between Vanmayi (6) and Shresta (4) Person at position 5 (Gopal)

Additional Information: Tips for Solving Seating Arrangement Puzzles

  • Always start with the most definitive clues, like a person's fixed position from an end.
  • Represent the arrangement visually, like drawing a line or using placeholders.
  • Note down constraints like "immediate left/right" or "between".
  • Consider all possibilities when a clue is ambiguous, but try to eliminate possibilities as you incorporate more clues.
  • For "between" involving three people, it usually implies they are consecutive in the line.
  • For "between" involving two people with a number of people between them, count the positions carefully.
  • If there's an interchange, update the arrangement carefully before answering the final question.
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Important Questions from Linear Arrangement

  1. Eight friends, A, B, C, D, E, F, G and H, are sitting in two lines of four persons each. Both the lines are facing each other. A is facing D. E is to the immediate left of G. H is to the immediate right of B. C is facing G. F is facing H. B is to the immediate right of the person who is facing G. D is to the immediate left of F. Which four persons are sitting in the same line?

  2. Nine employees, K, L, M, N, O, P, Q, R and S, are sitting in the office in a straight line, all facing the east. O is third to the right of M. K is third to the left of P. Q is between P and S. N is fourth to the right of M. P is to the immediate right of N. R is fourth to the left of O. Which of the following statements is NOT correct?

  3. Eight north-facing restaurants named P, Q, R, S, T, U, V and W are located in a straight line. S is second to the left of T. W is third to the left of P. T is between P and V. S is third to the left of V. W is to the immediate right of U. R is third to the right of P. Who is sitting fourth to the right of S?

  4. A question is given, followed by two statements numbered (I) and (II). You have to decide whether the data provided in the statements is sufficient to answer the question. Read both the statements and select the appropriate answer.

    Question: How many people are standing in the row where all people are facing north?

    Statements:

    (I) A is fourth from the left end; M is second to the right of A; and R is second from the left end.

    (II) M is fourth from the right end; only two people Stand between M and B.

  5. In this question, a question is followed by two statements numbered (I) and (II). You have to decide whether the data provided in the statement/s are sufficient to answer the question. Read both the statements and choose your answer carefully.

    Question: P, Q, R, S, T, U and V are 7 people standing in a row all facing North (not necessarily in the same order). Who is standing second to the right of T?

    Statements:

    (I) U is standing 3rd from the right end and 2nd to the left of R.

    (II) Q is standing to the immediate right of T. Q is standing 2nd to the left of P

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