Question Text
Question 2 :
If a matrix has $13$ elements, then the possible orders of the matrix are 
Question 3 :
If $A+ \displaystyle  \begin{bmatrix} 4 & 2   \\ 1 & 3   \end{bmatrix} $=$\displaystyle  \begin{bmatrix} 6 & 9   \\ 1 & 4   \end{bmatrix},$ then $A=$
Question 4 :
If $\displaystyle  \begin{bmatrix} x & y   \\ 1 & 6   \end{bmatrix} $ = $\displaystyle  \begin{bmatrix} 1 & 8   \\ 1 & 6   \end{bmatrix},$ then $x+2y=$
Question 5 :
$\begin{bmatrix} a & b  & c \end{bmatrix}$ is an example of
Question 7 :
If $A=\begin{bmatrix}5 & 2\\ 7 & 4\end{bmatrix}$ is a $2\times 2$ matrix, then $a_{12}$=
Question 8 :
$A = \begin{bmatrix} 2 & 3& 1\\4&1&5\\3&9&7\end{bmatrix}$. Then the additive inverse of $A$ is
Question 9 :
If $A=\begin{bmatrix} 1 & 2 & 3 \\ 2 & 3 & 4 \\ 0 & 5 & 6 \end{bmatrix}$, then $2A=$
Question 12 :
Given that $A= \begin{bmatrix}11&1\\0&11\end{bmatrix}$, $B = \begin{bmatrix}0&-2\\-3&4\end{bmatrix}$, $I= \begin{bmatrix}1&0\\0&1\end{bmatrix}$. Find $A+3B+4I.$
Question 13 :
If $ A = \begin{bmatrix} a & x \\ y & a \end{bmatrix} $ and if $xy=1$ , then $ \text{det} (AA^T) $ is equal to :
Question 14 :
Matrix $A = [a_{ij}]_{m \times n}$ is a square matrix if<br>
Question 15 :
Let $\displaystyle A=\begin{bmatrix}-1\\2\\3 \end{bmatrix}$ and $\displaystyle B=\begin{bmatrix} -2 & -1 & -4 \end{bmatrix}$ <div><br/></div>Let $\displaystyle K=1$ in matrix $A$ then $\displaystyle (AB)'$ equals to <br/>