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    Question

    How many different words can be formed with the letters

    of the word PRACTICE such that each of the word begin with E and ends with R?
    A 720 Correct Answer Incorrect Answer
    B 360 Correct Answer Incorrect Answer
    C 120 Correct Answer Incorrect Answer
    D 180 Correct Answer Incorrect Answer

    Solution

    When E and R are fixed as first and last letters of the word, then we have only 6 letters to be arranged. Hence required number of ways = (6 !)/(2 !) = 360

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