J & K CET Engineering J and K - CET Engineering Solved Paper-2004

  • question_answer
    If \[n=2002,\] evaluate \[\frac{1}{{{\log }_{2}}n!}+\frac{1}{{{\log }_{3}}n!}+\frac{1}{{{\log }_{4}}n!}+.....+\frac{1}{{{\log }_{2002}}n!}\]

    A)  \[1\]

    B)  \[2\]

    C)  \[3\]

    D)  \[4\]

    Correct Answer: A

    Solution :

    \[\frac{1}{{{\log }_{2}}n!}+\frac{1}{{{\log }_{3}}n!}+\frac{1}{{{\log }_{4}}n!}+....+\frac{1}{{{\log }_{2002}}n!}\] \[=\frac{\log \,2}{\log n!}+\frac{\log \,3}{\log \,n!}+.....+\frac{\log 2002}{\log n!}\] \[=\frac{\log (2.3.4....2002)}{\log n!}=\frac{\log 2002!}{\log n!}\] \[=\frac{\log \,2002!}{\log \,2002!}\] \[(\because \,\,\,n=2002\,given)\] \[=1\]


You need to login to perform this action.
You will be redirected in 3 sec spinner