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SSC Sample Paper Mock Test-3 SSC CGL Tear-II Paper-1

  • question_answer
    Find the sum of the following \[\frac{1}{9}+\frac{1}{6}+\frac{1}{12}+\frac{1}{20}+\frac{1}{30}+\frac{1}{42}+\frac{1}{56}+\frac{1}{72}\]

    A)  \[\frac{1}{2}\]

    B)  \[0\]

    C)  \[\frac{1}{9}\]                         

    D)  \[\frac{1}{2520}\]

    Correct Answer: A

    Solution :

    \[\frac{1}{9}+\frac{1}{6}+\frac{1}{12}+\frac{1}{20}+\frac{1}{30}+\frac{1}{42}+\frac{1}{56}+\frac{1}{72}\] \[=\frac{280+420+210+126+84+60+45+35}{2520}\]\[=\frac{1260}{2520}=\frac{1}{2}\]                                    


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