7th Class Mathematics Sample Paper Mathematics Sample Paper-2

  • question_answer
    Evaluate: \[{{({{5}^{-1}}-{{7}^{-1}})}^{-1}}\]

    A) \[\frac{35}{2}\]             

    B)  \[\frac{2}{35}\]   

    C)  \[\frac{1}{7}\]

    D) \[\frac{2}{15}\]

    E) None of these

    Correct Answer: A


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