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  1. Find the average of cubes of first 7 consecutive natural numbers.

    2. A.
    112
    B.
    110
    C.
    116
    D.
    113

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    Answer : Option A

    Explanation :


    The average of cubes of first n consecutive natural numbers is given by;
    = n (n+1)²/4
    Here, n=7
    = 7 (7+1)²/4
    = 7*64/4
    =448/4
    = 112

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