29.
L, G, K, P, H and Z live on eight different floors of the same multistorey building with 2 floors being vacant. The lowermost floor in the building is numbered 1, the floor above it number 2 and so on till the topmost floor is numbered 8.
H lives on floor No. 1. K on No. 2, and P on No. 8. One immediate floor above and one immediate floor below Z are vacant. Gβs floor is immediately above the floor on which L lives and Gβs floor is also immediately below Pβs floor. Who lives on floor No. 4?