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7th Class Mathematics Exponents and Power Question Bank Exponents

  • question_answer
    If \[{{\left( \frac{\mathbf{m}}{\mathbf{n}} \right)}^{\mathbf{3/8}}}\mathbf{+}{{\left( \frac{\mathbf{n}}{\mathbf{m}} \right)}^{\mathbf{3/8}}}\mathbf{=9}\] then find the value of \[\,{{\left( \frac{\mathbf{m}}{\mathbf{n}} \right)}^{\mathbf{3/4}}}\mathbf{+}{{\left( \frac{\mathbf{n}}{\mathbf{m}} \right)}^{\mathbf{3/4}}}\].

    A) 79        

    B)  72

    C)  83

    D)  84

    E)  None of these

    Correct Answer: A

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