Question:
Let $A$ be a matrix such that $A .\left[\begin{array}{ll}1 & 2 \\ 0 & 3\end{array}\right]$ is a scalar matrix and $|3 \mathrm{~A}|=108$. Then $\mathrm{A}^{2}$ equals :
Correct Option: 1
Solution:
Solution not required
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