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      Question

      In a row of twelve persons are facing north how many

      person sits between W and N? Statement I: Only two person sits between W and X. Only one person sits between Y and X, who doesn’t sit with W. O sits third to right of M, neither of them sits adjacent to X or Y. At least two person sits between Y and N, who neither sits adjacent to O nor W, who sits at left end of the row. Only three person sits between O and Z, who doesn’t sit adjacent to Y. Statement II: X sits fourth from left end. Only two person sits between N and O. Only one person sits between W and X. Only two person sits between Z and N, who sits immediate left of M. O sits at end of the row Each of the questions below consists of a question and two statements numbered I and II given below it. You have to decide whether the data provided in the statements are sufficient to answer the question:
      A If the data in Statement I alone is sufficient to answer the question, while the data in Statement II alone is not sufficient to answer the question Correct Answer Incorrect Answer
      B If the data in Statement II alone is sufficient to answer the question, while the data in Statement I alone is not sufficient to answer the question. Correct Answer Incorrect Answer
      C If the data either in Statement I alone or in Statement II alone is sufficient to answer the question. Correct Answer Incorrect Answer
      D If the data in both the Statements I and II together are not sufficient to answer the question. Correct Answer Incorrect Answer
      E If the data in both the Statements I and II together are necessary to answer the question. Correct Answer Incorrect Answer

      Solution

      From Statement I: We have: Only two person sits between W and X. W sits at left end.  Only one person sits between Y and X, who doesn’t sit with W, that means Y sits second to right of X.  O sits third to right of M, neither of them sits adjacent to X or Y.  Only three person sits between O and Z, who doesn’t sit adjacent to Y, that means O sits at extreme right end.  At least two person sits between Y and N, who neither sits adjacent to O nor W, that means we have two different case, in case (1) N sits left of Y, in case (2) N sits right of Y. Based on above given information we have: Case-1 Clearly, only six person sits between W and N. Hence, statement II alone sufficient.

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