A, B, C, D, E and F 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 is numbered 6. The product of the floor numbers on which D and C live is 10. A lives immediately above F. The sum of the floor numbers on which B and D live is 11. How many people live below D?

D, E, P, U, T, and Y live on six different floors of the same building. The lowest floor is numbered 1, the floor immediately above it is numbered 2, and so on up to the top floor numbered 6. D lives on the topmost floor. Only two people live between D and P. Y lives on an odd-numbered floor, but not on the lowest floor. Only two people live between Y and U. T lives on a floor below E. Who lives on floor number 1?

M, N, O, P, E, and F 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 is numbered 6. M lives on floor numbered 4. Only two people live between M and F. Only P lives between M and N. E lives immediately below M. Who lives on floor number 2?