Question

Read the following instructions and answer the question:
Eleven friends M, N, O, P, Q, R, S, T, U, V and W are sitting in the first row of the stadium watching a cricket match.
(A) T is to the immediate left of P and third to the right of U.
(B) V is the immediate neighbour of M and N and third to the left of S.
(C) M is the second to the right of Q, who is at one of the ends.
(D) R is sitting next to the right of P and P is second to the right of O.
If Q and P, O and N, M and T, and W and R interchange their positions then which of the following pairs of friends is sitting at the ends?

• A. P and Q
• B. Q and R
• C. P and W
• D. W and R

Hint:

Only the swaps touching seat 1 (Q-P) and seat 11 (W-R) matter for the ends.

Answer 1

The Correct Option is C

Step 1: The original row (positions 1 to 11) is: Q, W, M, V, N, U, S, O, T, P, R.
Step 2: Now swap the stated pairs one at a time. Swap Q (position 1) and P (position 10): position 1 becomes P, position 10 becomes Q.
Step 3: Swap O (position 8) and N (position 5): position 5 becomes O, position 8 becomes N.
Step 4: Swap M (position 3) and T (position 9): position 3 becomes T, position 9 becomes M.
Step 5: Swap W (position 2) and R (position 11): position 2 becomes R, position 11 becomes W.
Step 6: The new row is: P, R, T, V, O, U, S, N, M, Q, W. The two ends are position 1 (P) and position 11 (W), so P and W are sitting at the ends.