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8th Class Mathematics Rational Numbers Question Bank Numbers

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

    A) 5                                 

    B) 25            

    C) 10                   

    D) 15                    

    Correct Answer: B

    Solution :

     \[\frac{a+b}{2}\] Clearly, on multiplication, by\[a<\frac{a+b}{a}<b\], it becomes a perfect cube.       


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