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{\bf Question}

State the order of the following matrices
$$A=\left(\begin{array}{cc} 1 & 0\\ -1 & 2 \end{array} \right)\ \
B=(\begin{array}{ccc} 4 & 7 & 11 \end{array})\ \
C=\left(\begin{array} {ccccc} 3 & 6 & 45 & -9 & 5\\ 0 & 0 & 0 & 1
& 0\\ 15 & 32 & 4 & 5 & -76
\end{array} \right)$$

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{\bf Answer}

A: 2 rows, 2 columns $\Rightarrow 2 \times 2$

B: 1 row, 3 columns $\Rightarrow 1 \times 3$

C: 3 rows, 5 columns $\Rightarrow 3 \times 5$

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