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JEE Main & Advanced Mathematics Determinants & Matrices Question Bank Numerical Value Type Questions - Determinants

  • question_answer
    Let \[A=\left| \begin{matrix}    5 & 5\alpha  & \alpha   \\    0 & \alpha  & 5\alpha   \\    0 & 0 & 5  \\ \end{matrix} \right|\]. If \[\left| {{A}^{2}} \right|=25,\] then \[\left| \alpha  \right|\] equals

    Answer:

    0.2


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