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SSC Sample Paper Mock Test-4 SSC CGL Tear-II Paper-1

  • question_answer
    Simplify \[\frac{0.41\times 0.41\times 0.41+0.69\times 0.69\times 0.69}{0.41\times 0.41-0.41\times 0.69+0.69\times 0.69}\]

    A)  0.28                            

    B)  1.1    

    C)  11                               

    D)  2.8

    Correct Answer: B

    Solution :

      Let 0.41 = x and 0.69= y \[\therefore \]      Expression \[=\frac{({{x}^{3}}+{{y}^{3}})}{({{x}^{2}}-xy+{{y}^{2}})}\] \[=\frac{(x+y)({{x}^{2}}-xy+{{y}^{2}})}{({{x}^{2}}-xy+{{y}^{2}})}\] \[=x+y=0.41+-.0690=1.10\]


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