How many persons live between Q and P?

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Question

Study the following information carefully and answer the questions given below it. Eight persons P, Q, R, S, T, U, V and W are living in the same building but on different floors but not necessarily in the same order, such that the bottommost floor is numbered as 1 and the floor immediately above floor 1 is numbered as 2 and so on. W lives on the fifth floor. Only two persons live between V and W. U lives on an even numbered floor and immediately above P. As many persons live above S as below R. S lives one of the floors above R.T lives one of the floors above Q but not immediately above. Only one person lives between S and T.