M, N, O, P, Q and R live on six different floors of the same building. The lowermost floor in the building is numbered 1, the floor above it, number 2 and so on till the topmost floor is numbered 6. Q lives on an odd-numbered floor but not on the lowermost floor. Only one person lives between Q and N. R lives immediately above Q. Only two people live between O and Q. If P lives immediately above R, where does M live?

Given:
M, N, O, P, Q and R live on six different floors of the same building.

The lowermost floor in the building is numbered 1, the floor above it, number 2 and so on till the topmost floor is numbered 6.

Q lives on an odd-numbered floor but not on the lowermost floor.

Only one person lives between Q and N.

R lives immediately above Q.

Only two people live between O and Q.

P lives immediately above R.

 So, M lives on 2nd floor.

Thus, correct option is (d).