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    Question

    The average of 6 numbers is 25. If the sum of the first

    5 numbers is 110, find the 6th number.
    A 40 Correct Answer Incorrect Answer
    B 20 Correct Answer Incorrect Answer
    C 65 Correct Answer Incorrect Answer
    D 55 Correct Answer Incorrect Answer

    Solution

    Total sum of 6 numbers = 6 × 25 = 150 Let 6th number = x. Sum of first 5 + 6th = 110 + x = 150 So x = 150 − 110 = 40 Answer: 6th number = 40.

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