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    Question

    15           15          

    60           540         8650 In each of the following number series, a wrong number is given. Find out the wrong number.
    A 15 Correct Answer Incorrect Answer
    B 540 Correct Answer Incorrect Answer
    C 60 Correct Answer Incorrect Answer
    D 8650 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    The above series go in following sequence  12 , 22 , 32, 42 15 × 1= 15 15 × 4= 60 60 × 9 = 540 540 × 16 = 8640

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