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  5. Exponents and Power

7th Class Mathematics Exponents and Power Question Bank Exponents

  • question_answer
    If \[{{\mathbf{4}}^{\mathbf{-2X}}}\mathbf{=}\frac{\mathbf{1}}{\mathbf{4096}}\,\,\mathbf{and}\,\,\mathbf{1}{{\mathbf{1}}^{\mathbf{y}}}\mathbf{=}\frac{\mathbf{1}}{\mathbf{1331}}\] then find the value of\[\mathbf{x}\text{ }-\text{ }\mathbf{y}\].

    A) 0         

    B)  1   

    C)  3        

    D)  6

    E) None of these

    Correct Answer: D

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