L, M, N, O, P, Q and R are sitting in a line facing West but not necessarily…
2023
L, M, N, O, P, Q and R are sitting in a line facing West but not necessarily in the same order. 'O' is on the immediate right of 'N'. 'M' is at an extreme end and has 'P' as his neighbour. 'R' is between P and Q. O is sitting third from the south end. Who is sitting in the middle ?
- A.
(1) L
- B.
(2) N
- C.
(3) P
- D.
(4) Q
Attempted by 115 students.
Show answer & explanation
Correct answer: D
Key facts:
There are 7 people seated in a vertical line from the south end (position 1) to the north end (position 7). They face West, so a person's right side points toward the north end.
O is third from the south end, so O is at position 3.
O is immediately to the right of N. Since right means north, N must be at position 2 (just south of O).
M is at an extreme end and has P as a neighbour. M cannot be at the south end because position 2 is already occupied by N, so M must be at the north end (position 7) and P must be at position 6.
R is between P and Q. With P at position 6, the only way to place R between P and Q is to have Q at position 4, R at position 5, and P at position 6.
The remaining person L occupies the south end at position 1.
Final arrangement from south (position 1) to north (position 7): L, N, O, Q, R, P, M.
Answer: Q sits in the middle (position 4).