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8th Class Mathematics Exponents and Power Question Bank Exponents and Powers

  • question_answer
    The value of \[\frac{{{x}^{-4}}\times {{y}^{-6}}}{{{x}^{-16}}\times {{y}^{-7}}}\]

    A)  \[{{x}^{-1}}\times {{y}^{-1}}\]        

    B)  \[{{x}^{-1}}{{y}^{-1}}\]         

    C)  \[\frac{1}{{{x}^{12}}y}\]                  

    D)  \[{{x}^{12}}y\]

    Correct Answer: D

    Solution :

    (d) \[\frac{{{x}^{-4}}\times {{y}^{-6}}}{{{x}^{16}}\times {{y}^{-7}}}\] \[={{x}^{-4+16}}\times {{y}^{-6+7}}={{x}^{12}}\times y.\]


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