To solve the problem, we need to arrange the five friends according to the given conditions and identify who is sitting at the extreme left.
- Immediate Right/Left: Means directly adjacent to the right or left.
- Ends of the Row: Positions at the extreme left and extreme right.
- Logical Deduction: Use the given clues to place each friend correctly.
- B is to the immediate right of D.
- C is to the immediate left of E.
- D is not at either end.
- Since D is not at an end, possible positions for D are 2, 3, or 4.
- B is immediately right of D, so B must be next to D on the right.
- C is immediately left of E, so C and E are adjacent with C to the left of E.
- The row has 5 seats: positions 1 to 5 from left to right.
Arrangement: A (1), D (2), B (3), C (4), E (5)
The person sitting at the extreme left is A.
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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