P, Q, R, S, and T live on five 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 5. P lives immediately below T and immediately above S. P lives on an odd-numbered floor. If R does not live on the lowermost floor, on which floor does T live?

A, B, C, D, E, and F live on six different floors of the same building. The lowermost floor is numbered 1, the floor above it is numbered 2, and so on till the topmost floor, which is numbered 6. F lives on an even-numbered floor but not on floor 6. The sum of the floors on which D and F live is 9. The sum of the floors on which F and B live is 5. E lives immediately below C. How many people live between D and E?

Seven boxes L, M, N, O, P, Q and R are kept one over the other but not necessarily in the same order. M is kept fourth from the bottom. O is placed immediately below M. Q is placed immediately above R. P is the topmost box. M is placed immediately below L. Which box is placed at the bottom?