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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.

If C and D interchange their floors, who will then live immediately above F?

Competition practicePuzzles & Seating
  • AC
  • BD
  • CH
  • DK

Step-by-Step Solution

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.) After the swap, C moves to floor 7, which is immediately above F on floor 6.
Answer: A) C

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