Seven colleagues — Amar, Bindu, Chetna, Dhruv, Ekta, Faisal and Girish — live on a seven-storey building, one per floor (floor 1 is the lowest, floor 7 the topmost). Ekta lives on the lowest floor. Chetna lives on the topmost floor. Exactly three persons live above Faisal. Girish lives immediately above Ekta. Dhruv lives immediately below Chetna. Exactly one person lives between Amar and Bindu, and Bindu lives above Faisal. If Amar and Dhruv interchange their floors, who will then live immediately above Bindu?

Question

Accepted Answer

Amar. Ekta 1, Chetna 7, Faisal 4 (three above him), Girish 2, Dhruv 6. Amar and Bindu take 3 and 5 (one person, Faisal, between them); Bindu is above Faisal, so Bindu 5 and Amar 3. Bindu is on 5 and floor 6 belongs to Dhruv. After the swap Amar moves to floor 6, so Amar lives immediately above Bindu.

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