# CAT Quant Practice Problems

Question: For which value of k does the following pair of equations yield a unique solution of x such that the solution is positive?

$\begin{array}{l}{x^2} - {y^2} = 0\\{\left( {x - k} \right)^2} + {y^2} = 1\end{array}$

 2 0 $\sqrt 2$ $- \sqrt 2$

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CAT Quant Practice Problems