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    Question

    In how many different ways can 6 History and 5Hindi

    books be arranged in a shelf so that they are arranged alternately?
    A 84500 Correct Answer Incorrect Answer
    B 81900 Correct Answer Incorrect Answer
    C 86400 Correct Answer Incorrect Answer
    D 88200 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Number of ways = 6! ├Ч┬а 5! = 720┬а ├Ч┬а 120 = 86400

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