MCQ
The matrix $\text{A}=\begin{bmatrix}1&0&0\\0&2&0\\0&0&4\end{bmatrix}$ is:
- AIdentity matrix.
- BSymmetric matrix.
- CSkew$-$symmetric matrix.
- ✓Diagonal matrix.
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| $\text{X}$ | $1$ | $2$ | $3$ | $4$ |
| $\text{P}(\text{X})$ | $\frac{1}{10}$ | $\frac{1}{5}$ | $\frac{3}{10}$ | $\frac{2}{5}$ |
($A$) $\quad \alpha=0, k=8$
($B$) $4 \alpha-k+8=0$
($C$) $\operatorname{det}(P \operatorname{adj}(Q))=2^9$
($D$) $\operatorname{det}(Q \operatorname{adj}(P))=2^{13}$