Five houses in a row — which house is in the middle? (variant) Houses A, B, C, D, O in a line. A is to the right of B and to the left of C (B < A < C). O is on the right side of A. B is to the right of D. Which house is in the middle?

Difficulty: Medium

Correct Answer: A

Explanation:

Introduction / Context:This is equivalent in structure to the earlier five-house problem; we again seek the middle slot.

Given Data / Assumptions:B < A < C; O > A; B > D.

Concept / Approach:Construct a valid order (e.g., D, B, A, O, C) and check all relations.

Step-by-Step Solution:In D–B–A–O–C, A occupies position 3 (middle), satisfying all constraints.

Final Answer:A

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