Question

    What is the average of first 28 multiples of 2.8?

    A 78 Correct Answer Incorrect Answer
    B 49.6 Correct Answer Incorrect Answer
    C 40.6 Correct Answer Incorrect Answer
    D 59.5 Correct Answer Incorrect Answer

    Solution

    First term = 2.8 x 1 = 2.8 Last term = 2.8 x 28 = 78.4 Required average = (2.8 + 78.4)/2 = 40.6

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