Step 1: Determine the seating arrangement.
- P is right of Q, so Q must be to the left of P.
- T is left of R and right of P, meaning T is between P and R.
- Q is right of S, so S must be to the left of Q.
This means the order of boys from left to right is:
\[
S, Q, P, T, R.
\]
Step 2: Identify the boy in the middle.
The boy in the middle of this arrangement is \( \boxed{R} \).
Final Answer: \[ \boxed{R} \]
Four teams – Red (R), Blue (B), Green (G), and Yellow (Y) – are competing in the final four rounds of the Inter-School Science Olympiad, labeled Round A, Round B, Round C, and Round D. Each round consists of one match between two teams, and every team plays exactly two matches. No team plays the same opponent more than once.
The final schedule must adhere to the following rules:
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