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10th Class Mathematics Arithmetic Progressions Question Bank Arithmetic Progressions

  • question_answer
    Find the sum of 14 AM's between 5 and 8.

    A)  91                         

    B)         89

    C)  90                         

    D)         85

    Correct Answer: A

    Solution :

     \[1789-49=29x\]                 a = 5 (Given) \[\Rightarrow \]               \[x=\frac{1740}{29}=60\]                 \[\Rightarrow \]                 \[140\times 605=11\times L.C.M.\]                 \[\Rightarrow \]


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