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SSC Sample Paper Mock Test-14 SSC CGL Tear-II Paper-1

  • question_answer
    The equation \[px+q=0\] and \[rx+s=0\] are consistent, if

    A)  \[ps=qr\]

    B)  \[ps+qr=0\]

    C)  \[pq-rs=0\]

    D)  \[pq+rs=0\]

    Correct Answer: A

    Solution :

    \[px+q=0\] and \[rx+s=0\] \[\Rightarrow \]   \[x=\frac{-\,\,q}{p}\] and \[x=\frac{-\,\,s}{r}\] So,       \[\frac{-\,\,q}{p}=\frac{-\,\,s}{r}\]\[\Rightarrow \]\[ps=qr\]


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