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    Question

    How many persons goes before

    U?  Five persons U, V, W, X and Y goes on five different days of the week starting from Monday to Friday. At most one person goes after X. Y goes two days before X. W goes before U. U goes before Thursday. V does not go on Thursday. 
    A Two Correct Answer Incorrect Answer
    B Three Correct Answer Incorrect Answer
    C One Correct Answer Incorrect Answer
    D No one Correct Answer Incorrect Answer

    Solution

    At most one person goes after X. Y goes two days before X. We get X goes on either Thursday or Friday. Y goes on either Tuesday or Wednesday. W goes before U. U goes before Thursday. V does not goes on Thursday. W goes on Monday and U goes on Wednesday or Tuesday. V goes on Friday or Thursday. Case 2 will get discarded as we cannot place V. V goes on Friday. Therefore, the final arrangement is given below:

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