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10th Class Mathematics Sample Paper Maths Olympiad Model Test Paper-4

  • question_answer
    Sum of 20 terms of the series given by 3 + 7 + 11 + _____ is:

    A)  840                             

    B)  760

    C)  780                             

    D)  820

    E)  None of these

    Correct Answer: D

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