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

  • question_answer
    What is the smallest number by which 2560 must be multiplied so that the product is a perfect cube?

    A)  \[5\]                                    

    B)                         \[25\]                  

    C)                         \[10\]                                                  

    D)                         \[15\]  

    Correct Answer: B

    Solution :

    \[2560=2\times 2\times 2\times 4\times 4\times 4\times 5\] Clearly, on multiplication by \[5\times 5=25,\]it becomes a perfect cube.


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