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

  • question_answer
    The value of \[{{\left( \frac{23}{25} \right)}^{0}}\times {{\left( \frac{-1}{2} \right)}^{5}}\times {{2}^{3}}\times {{\left( \frac{3}{4} \right)}^{2}}\]is

    A)  \[-\frac{9}{64}\]          

    B)  \[\frac{9}{64}\]                     

    C)  \[\frac{64}{9}\]                     

    D)         \[-\frac{64}{9}\]       

    Correct Answer: A

    Solution :

    \[{{\left( \frac{23}{25} \right)}^{0}}\times {{\left( \frac{-1}{2} \right)}^{5}}\times {{2}^{3}}\times {{\left( \frac{3}{4} \right)}^{2}}\] \[=1\times {{(-1)}^{5}}\times {{(2)}^{-5}}\times {{2}^{3}}\times {{3}^{2}}\times {{(2)}^{-4}}=\frac{-9}{64}\]


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