Question
Who among the following lives to the west of J (on the
same floor)? Answer the questions based on the information given below: Ten persons namely, A, Z, C, Y, E, X, G, W, I and J live on 10 different flats of a 5 storey building, where the bottommost floor is 1 and the floor above is 2 and so on. There are 2 types of flats on each floor, flat P and flat Q such that flat P is in the west of flat Q. Flat P of floor 1 is immediately below of flat P of floor 2, which is immediately below of flat P of floor 3 and so on, similarly for flat Q. Z lives in flat P.Z and X live in the same type of flat. Two floors are there between the floors of Z and X. X lives exactly in the west of G. Z lives on the even numbered floor. I's floor is immediately above G's floor. I and E live in the same type of flat. There is one floor between the floors of I and E. Y's floor is just below W's floor. J lives above A. C doesn’t live in flat Q. W and J don't live in same type of flat.Solution
Z live in flat P of either floor 2 or floor 4. I lives on a floor that is immediately above the floor of G. I and E live in the same type of flat. Z and X lives in same flat. There is one floor between the floors of I and E. So, I lives in either flat P or flat Q. Case 1: When Z lives on 2nd floor. G cannot be placed in this case, so this case is not possible. 
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