Seating ArrangementsMCQPYQ Dec 23Question 2365 of 145
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Nine friends J, K, L, M, N, O, P, Q and R, are sitting in a row. L is to the right of M and is at the third place to the right of N. K is at one end of the row. Q is seated adjacent to both O and P. O is at the third place to the left of K. J is right next to L and the left of O. Answer the following questions: (Q. No. 35 and Q. No. 36) Who is immediate left to M?

Options

AN
BR
CL
DP
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Correct Answer

✅ Option b — R

All Options:

  • AN
  • BR
  • CL
  • DP

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Detailed Solution & Explanation

Let us determine the positions of the nine friends in the row step-by-step from left to right:
1. **K is at one end of the row and O is third to the left of K**: Since O is to the left of K, K must be at the rightmost end (Position 9) and O must be at Position 6:
_−_−_−_−_−O(6)−_−_−K(9)\_ - \_ - \_ - \_ - \_ - O (6) - \_ - \_ - K (9)
2. **Q is adjacent to both O and P**: This places Q directly between O and P. Thus, Q is at Position 7 and P is at Position 8:
_−_−_−_−_−O(6)−Q(7)−P(8)−K(9)\_ - \_ - \_ - \_ - \_ - O (6) - Q (7) - P (8) - K (9)
3. **J is right next to L and to the left of O**: This places J at Position 5 and L at Position 4:
_−_−_−L(4)−J(5)−O(6)−Q(7)−P(8)−K(9)\_ - \_ - \_ - L (4) - J (5) - O (6) - Q (7) - P (8) - K (9)
4. **L is at the third place to the right of N**: This places N at Position 1 (4−3=1\displaystyle 4 - 3 = 1):
N(1)−_−_−L(4)−J(5)−O(6)−Q(7)−P(8)−K(9)N (1) - \_ - \_ - L (4) - J (5) - O (6) - Q (7) - P (8) - K (9)
5. **Placing M and R**: Since L is to the right of M, M must be at Position 3, leaving Position 2 for R:
N(1)−R(2)−M(3)−L(4)−J(5)−O(6)−Q(7)−P(8)−K(9)N (1) - R (2) - M (3) - L (4) - J (5) - O (6) - Q (7) - P (8) - K (9).
Looking at the final unique arrangement, the person to the immediate left of M is R.
Hence, **Option B** is the correct answer.

About This Chapter: Seating Arrangements

Paper

Paper 3: Quantitative Aptitude

Weightage

5 Marks

Key Topics

Linear & Circular Seating Arrangements

A crucial part of the Logical Reasoning section. It tests spatial reasoning through linear arrangements (people sitting in a row) and circular arrangements. Students must decode right/left orientation based on the direction individuals face (North, South, or Center).

View Official ICAI Syllabus

Exam Strategy Tip

Always use abbreviations (A, B, C) and draw the diagram immediately. The key trick is to never start with a 'relative' clue; always start with a fixed, concrete clue (e.g., 'A sits at the extreme right').

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