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10th Class Mathematics Arithmetic Progressions Question Bank Arithmetic Progressions

  • question_answer
    In an arithmetic progression if 7 times the 7th term is equal to 11 times the 11th term, find its 18th term.

    A)  1                            

    B)         0

    C)  -1                          

    D)         2

    Correct Answer: B

    Solution :

     \[\therefore \] \[\text{7}\times \text{13}+\text{13}\]\[\therefore \] \[\text{224}=\text{12}0\times \text{1}+\text{1}0\text{4}\]\[\text{12}0=\text{1}0\text{4}\times \text{1}+\text{16}\] \[\text{1}0\text{4}=\text{16}\times \text{6}+\text{8}\]\[16=8\times 2+0\]


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