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SSC Sample Paper SSC CGL - Sample Paper-1

  • question_answer
    What is the value of \[\sqrt{7.84}+\sqrt{0.0784}+\sqrt{0.000784}+\sqrt{0.00000784}?\]

    A)  3.08                            

    B)  3.108

    C)  3.1008            

    D)  3.1108

    Correct Answer: D

    Solution :

    \[\sqrt{7.84}+\sqrt{0.0784}+\sqrt{0.000784}+\sqrt{0.00000784}\] \[=\sqrt{\frac{784}{100}}+\sqrt{\frac{784}{10000}}+\sqrt{\frac{784}{1000000}}+\sqrt{\frac{784}{100000000}}\] \[=\frac{28}{10}+\frac{28}{100}+\frac{28}{1000}+\frac{28}{10000}\] \[=2.8+0.28+0.28+0.0028\] \[=3.1108\]


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