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

  • question_answer
    \[\frac{10.3\times 10.3\times 10.3+1}{10.3\times 10.3-10.3+1}\]is equal to

    A) 9.3       

    B)  10.3

    C)  11.3    

    D)  12.3

    Correct Answer: C

    Solution :

    Given expression \[=\frac{10.3\times 10.3\times 10.3+1\times 1\times 1}{10.3\times 10.3-10.3\times 1+1\times 1}\] Let \[10.3=a,\]and \[1=b\] Then,                                      Expression \[=\frac{{{a}^{3}}+{{b}^{3}}}{{{a}^{2}}-ab+{{b}^{2}}}=\frac{(a+b)({{a}^{2}}-ab+{{b}^{2}})}{{{a}^{2}}-ab+{{b}^{2}}}\] \[=a+b=10.3+1=113\]


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