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    Question

    Six persons N, O, P, Q, R and S live in a six storey

    building but not necessarily in the same order. The bottommost floor is numbered as 1st and the topmost floor is numbered as 6th . P lives two floors above R. Q lives just below S. S lives on a prime numbered floor. O lives below P but above N. N doesn't live below Q. Who lives on 4 th floor?
    A O Correct Answer Incorrect Answer
    B Q Correct Answer Incorrect Answer
    C N Correct Answer Incorrect Answer
    D R Correct Answer Incorrect Answer

    Solution

    P lives two floors above R. Q lives just below S. S lives on a prime numbered floor. We will have three cases, first, when S lives on second floor, second, when S lives on third floor and third when S lives on fifth floor. O lives below P but above N. N doesn't live below Q. Case 3 gets eliminated. In case 1, P lives on 6 th floor, O lives on 5 th floor. In case 2, O lives on 5 th floor and N lives on 1 st floor but this case will get discarded as N doesn't live below Q. The final arrangement is as follows.

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