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  3. 12th Class
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12th Class Mathematics Sample Paper Maths Olympiad Model Paper-8

  • question_answer
    If \[f(x)=\frac{x}{x-1}=\frac{1}{y},\] then f(y)=

    A)  \[x\]                            

    B)  \[\frac{2}{5}\]

    C)  \[-\frac{2}{5}\]                        

    D)  All of these

    E)  None of these

    Correct Answer: D

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