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SSC Sample Paper Mock Test-18 SSC CGL Tear-II Paper-1

  • question_answer
    The value of \[(\sqrt[3]{3.5}+\sqrt[3]{2.5})\{{{(\sqrt[3]{3.5})}^{2}}-\sqrt[3]{8.75}+{{(\sqrt[3]{2.5})}^{2}}\}\]is

    A) 5.375

    B)  1

    C)  6        

    D)  5

    Correct Answer: C

    Solution :

    Let \[\sqrt[3]{3.5}=a\]and \[\sqrt[3]{2.5}=b\]                   \[\therefore \]Given expression \[=(a+b)({{a}^{2}}-ab+{{b}^{2}})={{a}^{3}}+{{b}^{3}}\] \[={{(\sqrt[3]{3.5})}^{3}}+{{(\sqrt[3]{2.5})}^{3}}=3.5+2.5=6\]


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