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NTSE Sample Paper NTSE SAT Practice Test-19

  • question_answer
    + If r and s are any real numbers such that \[0\le \]\[s<1\] and \[r+s=1\]then the maximum value of the product r s is

    A) 1                                 

    B) ¾

    C) 1/4                   

    D)        \[{\scriptstyle{}^{1}/{}_{2}}\]

    Correct Answer: D

    Solution :

    [d] r + s = 1, The value of r 5 is maximum if \[r=\frac{1}{2}\,\,and\,\,s=\frac{1}{2}\] \[\therefore \,\,r\,\,s=\frac{1}{4}\]


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