Question Text
Question 3 :
A square matrix A has 9 elements. What is the possible order of A?
Question 4 :
If $P=\displaystyle  \begin{bmatrix} 4 & 3 &2   \end{bmatrix}  $ and $Q = \displaystyle  \begin{bmatrix} -1 & 2 &3   \end{bmatrix}  ,$ then $P-Q=$
Question 5 :
A matrix having $m$ rows and $n$ columns with $m  \displaystyle \neq   n$ is said to be a
Question 6 :
If a matrix has $13$ elements, then the possible orders of the matrix are 
Question 8 :
If a matrix has $m$ rows and $n$ columns, then its order is
Question 11 :
If $\left[\begin{array}{ll}<br/>x+3 & 2y+x\\<br/>z-1 & 4a-z<br/>\end{array}\right]=\left[\begin{array}{ll}<br/>0 & -7\\<br/>3 & 2a<br/>\end{array}\right],$ then $(x+y+z+a)$ is:
Question 14 :
If $A$ and $B$ are square matrices of the same order and if $A={ A }^{ T },B={ B }^{ T }$, then ${ \left( ABA \right) }^{ T } = $
Question 15 :
$\left[ \begin{matrix} 1 & 0 & 2 \\ -1 & 1 & -2 \\ 0 & 2 & 1 \end{matrix} \right] +\left[ \begin{matrix} 5 & 1& -2 \\ 1 & 1 & 0 \\ -2 & -2 & 1 \end{matrix} \right] \ $<br/><div><span><br/></span></div><div><span>What will be the sum of the diagonal elements of the resultant matrix?</span></div>