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  3. 11th Class
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11th Class Mathematics Sample Paper Mathematics Sample Paper-4

  • question_answer
    The ratio between the sum of n terms of two A.P.'s is (3n + 8) : (7n +15) then the ratio between their 12th terms is

    A)  5:7                  

    B)  12 : 11        

    C)  11 : 12            

    D)  7 16

    Correct Answer: D

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