X, Y, Z, S, T, and U live on six different floors of the same building numbered 1 to 6 from bottom to top. Only two people live between T and Y. Only S lives above U. Z lives on an even-numbered floor. T lives on the lowermost floor. How many people live between X and T?

P, Q, R, S, T and U live on six different floors of the same building. The bottommost floor of the building is numbered 1, the floor above it is numbered 2 and so on, the topmost floor is numbered 6. T lives on an odd-numbered floor but not on the bottommost floor. S lives on the topmost floor. Only two people live between T and R. Only R lives between Q and U. U does not live on the bottommost floor. On which floor does P live?

R, S, U, V, Y and Z live on six different floors of the same building. The lowermost floor in the building is numbered 1, the floor above it is numbered 2 and so on till the topmost floor, which is numbered 6. No one lives above S. Only three people live between S and V. U lives on a floor below V. R lives on an even-numbered floor. Y lives on an odd-numbered floor but not on floor number 5. How many people live between Z and V?