Five friends (P, Q, R, S, T) sit in a row facing north. Q is not at the extreme ends. R is to the right of S but not adjacent. Who is third from the left?
Correct: B
Fix S and R's positions first. Q cannot be in first or last, so must be in 2nd, 3rd, or 4th. R must be to the right of S but not adjacent, narrowing positions to S in 1st and R in 3rd or 4th. Combining all constraints, Q is third from the left.