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SSC Sample Paper Mock Test-6 SSC CGL Tear-II Paper-1

  • question_answer
    \[\frac{{{(998)}^{2}}-{{(997)}^{2}}-45}{{{(98)}^{2}}-{{(97)}^{2}}}\]is equal to

    A)  1995

    B)  195

    C)  95

    D)  10

    Correct Answer: D

    Solution :

    Given expression \[=\frac{[{{(998)}^{2}}-{{(997)}^{2}}]-45}{{{(98)}^{2}}-{{(97)}^{2}}}\] \[=\frac{(998+997)(998-997)-45}{(98+97)(98-97)}\] \[=\frac{1995-45}{195}=\frac{1950}{195}=10\]


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