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Banking Sample Paper SBI Clerk Grade (Main) Sample Test Paper-4

  • question_answer
    Direction: What should come in place of the question mark (?) in the question?
    \[\,{{(450\div 30)}^{2}}-{{(12)}^{2}}={{(?)}^{2}}\]

    A)  \[\,{{9}^{2}}\]                       

    B)  \[\,-{{9}^{2}}\]

    C)  \[\sqrt{9}\]                               

    D)  81

    E)  None of these

    Correct Answer: E

    Solution :

     \[{{\left( \frac{450}{30} \right)}^{2}}-{{(12)}^{2}}={{(?)}^{2}}\] \[\Rightarrow 225-144={{?}^{2}}\] \[\Rightarrow {{?}^{2}}=81\] \[\therefore \,\,?=\sqrt{81}=9\]


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