On which of the following floors does V live?

From the information given in the question, we can have the following table:
P, Q, R, S, T and V live on different floors of the same building having six floors numbered one to six (the ground floor is numbered 1, the floor above it is numbered 2, and so on, and the topmost floor is numbered 6).
From figure it is clear that V live on the 4th floor .