Five members U, R, Q, P, S stand in a row: R is to the right of U but to the left of Q; P is to the right of Q but to the left of S. Who stands in the middle?

Introduction / Context:We must place five people using two “between” constraints and pick the middle position (3rd).

Given Data / Assumptions:

• R right of U but left of Q ⇒ U < R < Q.
• P right of Q but left of S ⇒ Q < P < S.

Concept / Approach:Stitch both into a total order: U < R < Q < P < S.

Step-by-Step Solution:Left→right: U, R, Q, P, S.The middle (3rd) is Q.

Verification / Alternative check:Each inequality is satisfied by the chain above.

Why Other Options Are Wrong:They correspond to positions 1,2,4,5, not the middle.

Common Pitfalls:Swapping P and Q; remember P must be to the right of Q.

Final Answer:Q