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Six people are in a row. A is between B and C. D is at one end. E is at the other end. F is next to E. If C is next to D, who is next to F?
A
B
C
E
A
Place the fixed end anchors (D and E) first, then position the constraint-heavy clusters (D-C-A-B) to reveal the sequence.
Place the fixed end anchors (D and E) first, then position the constraint-heavy clusters (D-C-A-B) to reveal the sequence.
Establish the anchors
D is at one end and E is at the other. Let the row be positions 1 to 6. If D is at 1, E must be at 6. If D is at 6, E must be at 1.
Apply proximity constraints
F is next to E. If E is at 6, F is at 5. C is next to D. If D is at 1, C is at 2. A is between B and C. If C is at 2 and A is between B and C, A must be at 3 and B at 4.
Final Sequence Mapping
The arrangement from left to right (D=1) is: D(1), C(2), A(3), B(4), F(5), E(6). Looking at this sequence, F is at 5 and A is at 3. Who is next to F? The neighbor of F is B (at 4) and E (at 6). Wait, let's re-evaluate: A is between B and C (B-A-C). Since C is next to D, the order is D-C-A-B. With E at the other end and F next to E, the sequence is D-C-A-B-F-E. Therefore, F is next to B and E.
B: B is next to A and F, not F alone. C: C is next to D and A, not F. D: E is next to F, but the question asks who is next to F other than E, which is B.
B is correct because in the arrangement D-C-A-B-F-E, the person next to F is B (besides E).
In seating arrangement questions, always sketch out the chain of constraints (e.g., D-C-A-B) before placing them in the total slots.