Question 1 :
If $A= [ 1 \ 2\  3 ]$, then the set of elements of A is
Question 2 :
If every row of a matrix $A$ contains $p$ elements and its column contains $q$ elements, then the order of $A$ is
Question 3 :
If $\displaystyle  \begin{bmatrix} x & y   \\ 1 & 6   \end{bmatrix} $ = $\displaystyle  \begin{bmatrix} 1 & 8   \\ 1 & 6   \end{bmatrix},$ then $x+2y=$
Question 6 :
If $\displaystyle  \begin{bmatrix} x & 1   \\ y & 2   \end{bmatrix} $ $- \displaystyle  \begin{bmatrix} y & 1   \\ 8 & 0   \end{bmatrix} =$ $\displaystyle  \begin{bmatrix} 2 & 0   \\ -x & 2   \end{bmatrix}, $ then the values of $x$ and $ y$ respectively are 
Question 9 :
A matrix having $m$ rows and $n$ columns with $m=n$ is said to be a 
Question 10 :
Given that $a\begin{bmatrix} 2 & 6 \\ 1 & 4 \end{bmatrix}=\begin{bmatrix} x & 27 \\ y & z \end{bmatrix}$ for some real number $a$, what is $x+z$?
Question 11 :
The value of $\begin{vmatrix}<br/>1990 & 1991 &1992 \\ <br/> 1991&1992 &1993 \\ <br/>1992 & 1993& 1994<br/>\end{vmatrix}$ is equal to 
Question 12 :
What is $\begin{vmatrix} -a^{ 2 } & ab & ac \\ ab & -b^{ 2 } & bc \\ ac & bc & -c^{ 2 } \end{vmatrix}$ equal to?
Question 13 :
Using properties of determinants, find the following:<br/>$\begin{vmatrix} \alpha  & \beta  & \gamma  \\ { \alpha  }^{ 2 } & { \beta  }^{ 2 } & { \gamma  }^{ 2 } \\ \beta +\gamma  & \gamma +\alpha  & \alpha +\beta  \end{vmatrix}$<br/>
Question 14 :
The value of $\begin{vmatrix} 1& 1 & 1\\ 1 & 1 + x & 1\\ 1 & 1 & 1 + y\end{vmatrix}$ is<br>
Question 15 :
If $A = \begin{bmatrix}a & b\\ c & d\end{bmatrix}$ (where bc $\neq$ 0) satisfies the equations $x^2 + k = 0$, then
Question 16 :
The value of the determinant<br>$\begin{bmatrix} { x }^{ 2 } & 1 & { y }^{ 2 }+{ z }^{ 2 } \\ { y }^{ 2 } & 1 & { z }^{ 2 }+{ x }^{ 2 } \\ { z }^{ 2 } & 1 & { x }^{ 2 }+{ y }^{ 2 } \end{bmatrix}$ is:
Question 17 :
$\begin{vmatrix} a+b & b+c & c+a \\ b+c & c+a & a+b \\ c+a & a+b & b+c \end{vmatrix}=\ K\begin{vmatrix} a & b & c \\ b & c & a \\ c & a & b \end{vmatrix}$, then $K=$
Question 18 :
Solve : $ \begin{vmatrix} b^2 + c^2 & a^2 & a^2 \\ b^2 & c^2 + a^2 & b^2\\ c^2 & c^2 & a^2 + b^2 \end{vmatrix} = $
Question 19 :
If $ \alpha , \beta $ are the roots of the equation $ax^2 + bx + c = 0, $ then the value of the determinant<br>$ \begin{vmatrix} 1 & \cos( \beta - \alpha ) & \cos \alpha \\ \cos (\beta - \alpha) & 1 & \cos \beta \\ \cos \alpha & \cos \beta & 1 \end{vmatrix} $ , is
Question 20 :
The value of $\begin{vmatrix}<br/>\frac{1}{a} &a^{2} &bc \\ <br/>\frac{1}{b} &b^{2} &ca \\ <br/>\frac{1}{c} & c^{2} & ab<br/>\end{vmatrix}$ is equal to