Question 1
Six persons B, A, D, F, C and E are sitting around a circular table facing the center.
B sits second to the left of A. D sits opposite to B.
F sits immediately to the right of D. E is not adjacent to F.
Who sits opposite to A?
Solution Approach:
Step 1: Draw circular diagram
6 persons facing center. Opposite positions are 3 seats apart.
Number positions 1–6 clockwise.
Step 2: Place definite positions
- Fix B at position 1 (reference point)
- B is second to the LEFT of A → A is 2 clockwise from B
pos[A] = 3
- D sits OPPOSITE B (pos 1) → pos 4
- F sits immediately to the right of D (pos 4) → pos 5
Step 3: Resolve remaining positions
Remaining persons: E, C → remaining seats: [2, 6]
E is NOT adjacent to F (pos 5).
Adjacent to pos 5: pos 4 and pos 6.
Therefore E → pos 2, and C → pos 6.
Final Arrangement (clockwise):
pos1:B → pos2:E → pos3:A → pos4:D → pos5:F → pos6:C
(All facing center)
Opposite pairs: pos1↔pos4, pos2↔pos5, pos3↔pos6
A is at pos 3 → opposite = pos 6 = C
Answer: C sits opposite to A.
Step 1: Draw circular diagram
6 persons facing center. Opposite positions are 3 seats apart.
Number positions 1–6 clockwise.
Step 2: Place definite positions
- Fix B at position 1 (reference point)
- B is second to the LEFT of A → A is 2 clockwise from B
pos[A] = 3
- D sits OPPOSITE B (pos 1) → pos 4
- F sits immediately to the right of D (pos 4) → pos 5
Step 3: Resolve remaining positions
Remaining persons: E, C → remaining seats: [2, 6]
E is NOT adjacent to F (pos 5).
Adjacent to pos 5: pos 4 and pos 6.
Therefore E → pos 2, and C → pos 6.
Final Arrangement (clockwise):
pos1:B → pos2:E → pos3:A → pos4:D → pos5:F → pos6:C
(All facing center)
Opposite pairs: pos1↔pos4, pos2↔pos5, pos3↔pos6
A is at pos 3 → opposite = pos 6 = C
Answer: C sits opposite to A.