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SSC Sample Paper SSC CGL - Sample Paper-20

  • question_answer
    The sum of \[\sqrt{0.01}+\sqrt{0.81}+\sqrt{0.21}+\sqrt{0.0009}\] is

    A) 2.1                               

    B) 2.13    

    C) 2.03                             

    D) 4000

    Correct Answer: B

    Solution :

    \[\sqrt{0.01}+\sqrt{0.81}+\sqrt{1.21}+\sqrt{0.0009}\] \[\sqrt{\frac{1}{100}}+\sqrt{\frac{81}{100}}+\sqrt{\frac{121}{100}}+\sqrt{\frac{9}{10000}}\]             \[=\frac{1}{10}+\frac{9}{10}+\frac{11}{10}+\frac{3}{100}\]             \[=0.1+0.9+1.1+0.03\]             = 2.13


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