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    Question

    What is the average of first 25 multiples of

    2.5?
    A 25.3 Correct Answer Incorrect Answer
    B 35.1 Correct Answer Incorrect Answer
    C 23.1 Correct Answer Incorrect Answer
    D 32.5 Correct Answer Incorrect Answer

    Solution

    First term = 2.5 x 1 = 2.5 Last term = 2.5 x 25 = 62.5 Required average = (2.5 + 62.5)/2 = 32.5

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