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    The average of first 120 even numbers is
    Question

    The average of first 120 even numbers is

    A.

    122

    B.

    121

    C.

    121.5

    D.

    120.5

    Correct option is B

    Given:

    First 120 even numbers

    Formula Used:

    Average = First term+Last term2\frac{\text{First term} + \text{Last term}}{2}​​

    Solution:

    First even number = 2

    120th even number = 2 × 120 = 240

    Average = 2+2402=2422=121\frac{2 + 240}{2} = \frac{242}{2} = 121

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