Question

If $A=(\begin{array}{cccc}1& -1& 3& 2\\ 5& -4& 7& 4\\ 6& 0& 9& 8\end{array})$, Find the order of the matrix

Answer 1

$A=\left[\begin{array}{ccc}1& -1& 3\\ 5& -4& 7\\ 6& 0& 9\end{array}\begin{array}{c}2\\ 4\\ 8\end{array}\right]$

$\Rightarrow$ Order of matrix $=3\times 4$

Hence, solved.