2. Questions Bank
  3. 8th Class
  4. Mathematics
  5. Cubes and Cube Roots

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

  • question_answer
    Find the smallest number by which 128625 must be divided so that the quotient will be a perfect cube.

    A)  2                                

    B)  3  

    C)  5                                

    D)  6

    Correct Answer: B

    Solution :

    (b): \[128625=3\times 42875\] \[=3\times 7\times 6125\] \[=3\times 7\times 49\times 125\] \[=3\times {{7}^{3}}\times {{5}^{3}}\] We divide by 3.             


You need to login to perform this action.
You will be redirected in 3 sec spinner