8
K, L, M, N, O and P 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. L does not live on floor number 5. O and P live on even numbered floors, but not on floor number 6. N lives on floor number 3. K lives immediately below L. O lives immediately above M, but not on floor number 4. Who lives on floor number 5?