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