Six persons, Dev, Qasim, Rafiq, Vikram, Waqas and Yusuf, live on the six floors of a building, one person per floor. The lowest floor is numbered 1 and the top floor is numbered 6. Exactly two persons live between Rafiq and Vikram. Rafiq lives on some floor above Qasim, but not immediately above. Waqas lives on some floor above Yusuf, but not immediately above. Vikram lives on the top floor. Only one person lives between Rafiq and Dev. Who lives on the floor immediately above Dev?
Correct answer B. Vikram
Explanation
From floor 1 upwards the only valid order is Qasim, Yusuf, Rafiq, Waqas, Dev, Vikram. Hence Vikram lives immediately above Dev.
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