Who lives just above
C.

P live in flat Y of either floor 2 or floor4. I lives on a floor that is immediately above the floor of G. I and E live in the same type of flat. P and R lives in same flat. There is one floor between the floors of I and E.So,I lives in either flat Y or flat Z. Case1:When P lives on 2^nd floor. G cannot be placed in this case, so this case is not possible. Q's floor is just below S's floor. Case2: When Plives on4^th floor It means that E lives on 4th floor and since I and E live in the same type of flat, I lives in Flat-Z on 2nd floor. Thus Q lives in flat-Y on 2nd floor. T lives above A. C doesn’t live in flat Z. S and T don'tlivein sametype offlat. So, T must live in flat Z which implies that S lives in flat Y and thus C lives in flat Y and A lives in Flat Z on 3rdfloor.The final arrangement is as follows: