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Banking Quantitative Aptitude Sample Paper Quantitative Aptitude Sample Paper-18

  • question_answer
    The sum of digits of the smallest number, which when multiplied by 800, gives a perfect cube is

    A) 2                                 

    B) 1

    C) 3                                 

    D) 4

    Correct Answer: B

    Solution :

    \[800=2\times 2\times 2\times 2\times 2\times 5\times 5={{2}^{5}}\times {{5}^{2}}\]
    To make a perfect cube we need \[2\times 5\] to be multiplied by 800. Sum of digits of
    \[(2\times 5=10)=1+0=1\]


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