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

  • question_answer
    If\[\sqrt{5}=2.2360,\]what is the value of \[\sqrt{405}-\sqrt{320}\]

    A) 5.6230             

    B)  6.6750  

    C)  3.3890            

    D)  2.2360

    Correct Answer: D

    Solution :

    Given, \[\sqrt{5}=2.2360\] \[\therefore \]\[\sqrt{405}-\sqrt{320}=\sqrt{81\times 5}-\sqrt{64\times 5}\] \[=9\sqrt{5}-8\sqrt{5}=\sqrt{5}=2.2360\]


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