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8th Class Mathematics Cubes and Cube Roots Question Bank Cube and Cube Roots

  • question_answer
    Find the value of \[\left[ \left( {{5}^{\mathbf{2}}}+\mathbf{1}{{\mathbf{2}}^{\mathbf{2}}} \right) \right]\]is given by

    A)  2197  

    B)  169          

    C)  1693                           

    D)  289

    Correct Answer: A

    Solution :

    (a): \[{{({{5}^{2}}+{{12}^{2}})}^{\frac{1}{2}}}=13\] \[{{13}^{3}}=169\times 13=2197.\]                 


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