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    Question

    The average of  8 numbers  is 45. If one of the

    numbers is removed, the average of the remaining  7 numbers  becomes 42. What is the  removed number ?
    A 45 Correct Answer Incorrect Answer
    B 66 Correct Answer Incorrect Answer
    C 73 Correct Answer Incorrect Answer
    D 22 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Sum of 8 numbers = 45 × 8 = 360 Sum of remaining 7 numbers = 42 × 7 = 294 Removed number = 360 − 294 = 66

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