New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    What is the average of first 21 multiples of

    2.1?
    A 25.3 Correct Answer Incorrect Answer
    B 35.1 Correct Answer Incorrect Answer
    C 23.1 Correct Answer Incorrect Answer
    D 52.8 Correct Answer Incorrect Answer

    Solution

    First term = 2.1 x 1 = 2.1 Last term = 2.1 x 21 = 44.1 Required average = (2.1 + 44.1)/2 = 23.1

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