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BCECE Engineering BCECE Engineering Solved Paper-2010

  • question_answer
    The 10th common term between the series \[3+7+11+...\].and \[1+6+11+...\]is

    A)  191                       

    B)         193                       

    C)  211                       

    D)         None of these

    Correct Answer: A

    Solution :

    The common terms between the series \[3+7+11+15+19+23+27+31+...\]and \[1+6+11+16+21+26+31+36+41+...\]are  11, 31, 51, 71,... Thus, the 10th term in the series 11, 31, 51, 71, ... is                                 \[{{t}_{10}}=11+(9).20\]                                 \[=11+180=191\]


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