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Difficulty: MediumSeating Arrangement

Eight delegates are attending a bilateral summit. They are seated in two parallel rows, with four delegates in each row, such that there is an equal distance between adjacent persons.

In Row 1: P, Q, R, and S are seated, and all of them are facing South.
In Row 2: W, X, Y, and Z are seated, and all of them are facing North.
Therefore, each delegate in a row faces exactly one delegate from the other row.

Read the following information carefully:
- R sits second to the right of P.
- The delegate who faces P sits to the immediate left of Y.
- W sits at an extreme end of the row.
- Only one person sits between W and X.
- Q does not face Z.

Who sits to the immediate right of the delegate who faces X?

  1. A
    Q
  2. SAnswer
  3. C
    R
  4. D
    Y

Answer

S
Based on the logical deductions from the clues, the final seating arrangement from left to right is R, S, P, Q in the South-facing row, and W, Z, X, Y in the North-facing row. The delegate facing X is P. Since P is facing South, their immediate right is the seat to their left from the viewer's perspective, which is occupied by S.

Step-by-Step Solution

1
Determine the relative positions in Row 1 based on facing direction.
Since Row 1 faces South, their 'right' translates to the viewer's 'left'. Placing R second to the right of P means R is positioned two seats to the left of P from our perspective. Possible positions (from Left to Right) are either (Seat 1: R, Seat 3: P) or (Seat 2: R, Seat 4: P).
To establish the initial positional anchors for the South-facing row.
2
Use the cross-row relationships to fix exact seats for P, R, and Y.
If P is at Seat 4, the person facing P (Seat 4 in Row 2) must be to the immediate left of Y. Since Row 2 faces North, this forces Y to an impossible 5th seat. Therefore, P must be at Seat 3 and R at Seat 1. The delegate facing P is at Seat 3 in Row 2, which makes Y sit at Seat 4.
To eliminate the invalid configuration and lock in the definitive locations of P, R, and Y.
3
Complete Row 2 using the constraints for W and X.
In Row 2, Seat 4 is occupied by Y, so W must be at the other extreme end (Seat 1). With exactly one person sitting between W and X, X must be seated at Seat 3. The remaining Seat 2 is occupied by Z.
To finalize the entire North-facing row layout.
4
Finalize Row 1 using Q's constraint.
Row 2 has Z at Seat 2. Since Q does not face Z, Q cannot be at Seat 2 in Row 1. Thus, Q takes Seat 4, leaving S at Seat 2. The arrangement is complete: Row 1 (R, S, P, Q) and Row 2 (W, Z, X, Y).
To complete the full seating matrix and ensure all conditions are met.
5
Answer the specific question asked in the stem.
X is at Seat 3. The delegate facing X is P. P is facing South, so P's immediate right is the seat immediately to their left from the viewer's perspective (Seat 2), which is occupied by S.
To accurately derive the final answer from the completed seating arrangement.

Key Concept

Linear and Parallel Seating Arrangements
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Topics

Seating Arrangement

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