Let $A=\begin{bmatrix} 1 & 3 & 7 & 9 \\ 2 & 4 & 6 & 8 \\ 0 & 1 & 3 & 2 \\ \end{bmatrix} $ . What is the order of $A$?
Options:
3*4
4*3
4*4
3*3
Correct Answer:
3*4
Explanation:
Since the given two matrices are equal they are entry wise equal. So we get four equations from this. Solving any two of these would give values of $x$ and $y$.