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    Question

    __ and __ live on same floor. 

    Answer the questions based on the information given below: Ten persons (A, B, C, D, W, X, Y, Z, T and U) 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 A and flat B such that flat A is in the west of flat B. Flat A of floor 1 is immediately below of flat A of floor 2, which is immediately below of flat A of floor 3 and so on, similarly for flat B. The dimensions of each of the flats is same There are two floors between the floors of U and Y (both of them may or may not live in the same type of flat). U lives on first floor. U lives south west of B. X lives 2 floors above B (both live in the same type of flat). D lives immediately above floor Z, who doesn’t live anywhere below B’s floor. A lives above D’s floor but not in flat A. W doesn’t live on a prime numbered floor. C doesn’t live immediately above B.
    A U, T Correct Answer Incorrect Answer
    B X, W Correct Answer Incorrect Answer
    C Y, T Correct Answer Incorrect Answer
    D C, A Correct Answer Incorrect Answer
    E U, Z Correct Answer Incorrect Answer

    Solution

    There are two floors between the floors of U and Y (both of them may or may not live in the same type of flat). U lives south west of B. U lives on first floor.   X lives 2 floors above B (both live in the same type of flat).   D lives immediately above Z, who doesn’t live below anywhere B’s floor. So, Y must live above U’s floor either in flat A or B. Both X and B live in flat B. Case 1: When Y lives in the flat B. A lives above D’s floor but not in flat A. W doesn’t live in a prime numbered floor. C doesn’t live immediately above B. So, A lives in on 5th floor in flat B. Case 2(b): When both Y and U live in the same flat and U live on 1st floor The final arrangement is as follows:

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