Who among the following possesses the book on subject T?
B or E
Since the book on subject T is between the books on subjects P and Q, and C's book is at the top, this implies that B or E could possess the book on subject T. Given that C's book is at the top and B or E are the only ones left to satisfy the conditions for subject T, it follows that B or E could be the owners.
Thus, the correct answer is (d) B or E.
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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