Eight people B, C, D, F, G, H, J and K live on an eight-storey building, one per floor, floor 1 being the lowest and floor 8 the topmost. (i) H lives on the topmost floor. (ii) G lives on the lowest floor. (iii) C lives immediately above G. (iv) B lives on floor 4. (v) Exactly two people live between B and D, and D lives above B. (vi) F lives immediately below D. (vii) K lives immediately above B. How many people live between J and D?

Question

Accepted Answer

Three. Arrangement (floor 1 → 8): G, C, J, B, K, F, D, H. (D is three floors above B, so D = 7, F = 6, K = 5; J takes floor 3.) J is on floor 3 and D on floor 7, so B, K and F (three people) live between them.

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