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Questions  >>  JEEMAIN and NEET  >>  Mathematics  >>  Class12  >>  Determinants
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Q)

If $A=\begin{bmatrix}\alpha&2\\2&\alpha\end{bmatrix}$ and $\mid A^3\mid=125$ then the value of $\alpha$ is

$(a)\;\pm 1\qquad(b)\;\pm 2\qquad(c)\;\pm 3\qquad(d)\;\pm 5$

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