Practice Test Discussion

Q)

Find out the average of 2, 4, 6, 8, 10, 12 and 14

[RBI, 2015]

    • Explanation

     

    Given averages 2, 4, 6, 8, 10, 11, 12, 14.

    According to the formula,

    The average of first 'n' even numbers =(n+1)

    Here, n=7

    ∴ Required average =(7+1)=8

     

    Hence, Option B is correct.

     

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