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

    Question

    What will be the average of odd numbers between 20 to

    74?
    A 37 Correct Answer Incorrect Answer
    B 42 Correct Answer Incorrect Answer
    C 47 Correct Answer Incorrect Answer
    D 37.5 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Odd numbers between 20 to 74.  ⇒ 21, 23, 25……………………………….73. Clearly, this is a series of consecutive odd numbers. ∴ According to the formula  Average of consecutive numbers = (first number +  last number)/2  = (21 +  73)/2  = 94/2 = 47

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