NTSE Sample Paper NTSE SAT Practice Test-17

  • question_answer
    Sum of the two numbers is 20 and their product is 96. The sum of their reciprocals is

    A) \[\frac{11}{12}\]                                   

    B) \[\frac{7}{14}\]

    C) \[\frac{3}{4}\]                          

    D) \[\frac{5}{24}\]

    Correct Answer: D

    Solution :

     [d] x + y =2 0, xy=96 \[\therefore \,\,\frac{1}{x}+\frac{1}{y}=\frac{x+y}{xy}=\frac{20}{96}=\frac{5}{24}\]


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