7th Class Mathematics Exponents and Power Question Bank Exponents and Power

  • question_answer
    \[{{\left( \frac{5}{7} \right)}^{5}}\]can be written as

    A)  \[{{\left( \frac{7}{5} \right)}^{5}}\]                              

    B) \[{{\left( 57 \right)}^{6}}\]

    C) \[\frac{{{5}^{5}}}{{{7}^{5}}}\]              

    D) \[{{\left( {{5}^{5}} \right)}^{7}}\]

    Correct Answer: C

    Solution :

    (c) Since\[{{\left( \frac{a}{b} \right)}^{m}}=\frac{{{a}^{m}}}{{{b}^{m}}}\] \[\therefore \]\[{{\left( \frac{5}{7} \right)}^{5}}=\frac{{{5}^{5}}}{{{7}^{5}}}\]                      


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