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