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SSC Sample Paper SSC (Group-C) Sample Test Paper-4

  • question_answer
    By what least number should 4320 be multiplied so as to obtain a number which is a perfect cube?

    A)  40              

    B)  50

    C)  60              

    D)  80

    Correct Answer: B

    Solution :

     \[4320=2\times 2\times 2\times 2\times 2\times 3\times 3\times 3\times 5\] \[={{2}^{3}}\times {{3}^{3}}\times {{2}^{2}}\times 5\] \[\therefore \]  Required number \[=2\times 5\times 5=50\]


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