P, Q, R, S, T, U and V are sitting in a row facing South. S is on the immediate left of R. Q is at an extreme end and has T as his neighbor. S is sitting fifth from the left. V is between U and T. Which of the following must be true?
(A) P is sitting on the extreme right.
(B) There are four people sitting between R and T.
(C) U is an immediate neighbor of S.
(D) P is sixth from the left.
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → (A) and (C) only
All seven face the same way (South), so “left” and “right” are the same for every person, and the seats can be numbered 1 to 7 from their left.
S is fifth from the left, so S is in seat 5.
S is on the immediate left of R, so R is the next seat to the right: R is in seat 6.
Q is at an end with T beside him. At the right end, T would need seat 6, which is R’s. So Q is in seat 1 and T in seat 2.
V is between U and T, so V is in seat 3 and U in seat 4. The only seat left, 7, is P’s.
(A) P is sitting on the extreme right. Correct. P is in seat 7, the right end of the row.
(B) There are four people sitting between R and T. Incorrect. T is in seat 2 and R in seat 6, so only three people (V, U and S) sit between them.
(C) U is an immediate neighbor of S. Correct. U is in seat 4 and S in seat 5, side by side.
(D) P is sixth from the left. Incorrect. P is seventh from the left; the sixth seat is R’s.