Question

Five friends P, Q, R, S and T are sitting in a row facing north. Q is to the immediate right of P. T is at the extreme left. R sits between Q and S.
Who is sitting at the extreme right?

• A. P
• B. Q
• C. R
• D. S

Hint:

Start arrangements by placing fixed positions first (like "T is at the extreme left").
Create small blocks of adjacent people from the clues (like [PQ] and [QRS]), then merge these blocks to easily find the complete arrangement.

Answer 1

The Correct Option is D

Step 1: Fix the extreme left.
T is at the far left, so the leftmost seat is T.

Step 2: Place P and Q together.
Q is immediately right of P, so we have the block P then Q.

Step 3: Use the clue about R.
R sits between Q and S, so the order around them is Q, R, S.

Step 4: Join the pieces.
Starting from T on the left, the chain becomes T, P, Q, R, S.

Step 5: Check it fits five seats.
That is exactly five people with every clue satisfied.

Step 6: Read off the extreme right.
The last person in the row is S.

Step 7: State the answer.
S is sitting at the extreme right. \[ \boxed{S} \]