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SSC Sample Paper SSC CGL - Sample Paper-26

  • question_answer
    If \[{{(19)}^{4}}\] subtracted from the square of a number, the answer so obtained is 723. What is the number?

    A) 131                              

    B) 144

    C) 362                  

    D) 322

    Correct Answer: C

    Solution :

    Let the number be x. \[{{x}^{2}}-{{(19)}^{4}}=723\] or         \[{{x}^{2}}=723+{{(19)}^{4}}\] or         \[{{x}^{2}}=723\text{ }+130321\] or         \[{{x}^{2}}=131044\] \[\therefore \]      \[x=\sqrt{131044}=362\]           


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