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

  • question_answer
    If a; b; c and d are consecutive natural numbers and \[{{a}^{3}}={{b}^{3}}+{{c}^{3}}+{{d}^{3}},\]what is the least value of 'a'?

    A)  \[6\]                                    

    B)                         \[9\]                    

    C)                         \[3\]                                    

    D)                         \[12\]

    Correct Answer: A

    Solution :

    \[a=6\] as \[{{6}^{3}}={{3}^{3}}+{{4}^{3}}+{{5}^{3}}\]


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