If A and B are 3 x 2, then A - B is

• A) 2 x 2
• B) not possible
• C) 3 x 2
• D) 2 x 3

${\rm{The \,addition \,of\, }}A = \left[ {\begin{array}{*{20}{c}} { - 7}&{16}\\ 9&{ - 21} \end{array}} \right]\;{\rm{and\,\, }}B = \left[ {\begin{array}{*{20}{c}} {10}&{ - 22}\\ { - 9}&{21} \end{array}} \right]{\rm{ is\, \_\_\_\_\_\_\_\_\_\_}}{\rm{.}}$

• A) $\left[ {\begin{array}{*{20}{c}} { - 70}&{ - 352}\\ { - 81}&{ - 441} \end{array}} \right]$
• B) $\left[ {\begin{array}{*{20}{c}} { - 3}&6\\ 0&0 \end{array}} \right]$
• C) $\left[ {\begin{array}{*{20}{c}} { - 13}&{ - 38}\\ {18}&{42} \end{array}} \right]$
• D) $\left[ {\begin{array}{*{20}{c}} 3&{ - 6}\\ 0&0 \end{array}} \right]\;$

${\text{If }}i = 5\% {\text{ and }}n = 10{\text{, then the accumulation factor AF is equal to __________}}{\text{.}}$

• A) $11.85$
• B) $12.58$
• C) $11.58$
• D) $12.85$

${\text{If }}2:x = 3:9\,{\text{ then}}\,\,x = \_\_\_\_\_\_\_\_\_\_\_\_\_.\,$

• A) $12$
• B) $3$
• C) $9$
• D) $6$

If A and B are 3 x 2 matrices.
Then A x B_______________ .

• A) will not be possible
• B) will be of 2 x 3
• C) will be of 3 x 3
• D) will be of 3 x 2

If a matrix A has n rows and n columns then we say it's a _________ matrix.

• A) scalar
• B) rectangle
• C) square
• D) diagonal

A matrix with dimension $1 \times n$ is known as _________.

• A) null matrix
• B) singular matrix
• C) row matrix
• D) column matrix

If $A = \left[ {\begin{array}{*{20}{c}} \begin{gathered} 2 \hfill \\ 1 \hfill \\ \end{gathered} &\begin{gathered} 2 \hfill \\ 2 \hfill \\ \end{gathered} &\begin{gathered} 2 \hfill \\ - 1 \hfill \\ \end{gathered} \end{array}} \right]$ and $k=-3$ then $kA$ will be _________.

• A) $\left[ {\begin{array}{*{20}{c}} \begin{gathered} - 6 \hfill \\ - 3 \hfill \\ \end{gathered} &\begin{gathered} - 6 \hfill \\ - 6 \hfill \\ \end{gathered} &\begin{gathered} - 6 \hfill \\ - 3 \hfill \\ \end{gathered} \end{array}} \right]$
• B) $\left[ {\begin{array}{*{20}{c}} \begin{gathered} 2 \hfill \\ - 3 \hfill \\ \end{gathered} &\begin{gathered} 2 \hfill \\ - 6 \hfill \\ \end{gathered} &\begin{gathered} 2 \hfill \\ 3 \hfill \\ \end{gathered} \end{array}} \right]$
• C) $\left[ {\begin{array}{*{20}{c}} \begin{gathered} 6 \hfill \\ 1 \hfill \\ \end{gathered} &\begin{gathered} 6 \hfill \\ 2 \hfill \\ \end{gathered} &\begin{gathered} 6 \hfill \\ - 1 \hfill \\ \end{gathered} \end{array}} \right]$
• D) $\left[ {\begin{array}{*{20}{c}} \begin{gathered} - 6 \hfill \\ - 3 \hfill \\ \end{gathered} &\begin{gathered} - 6 \hfill \\ - 6 \hfill \\ \end{gathered} &\begin{gathered} - 6 \hfill \\ 3 \hfill \\ \end{gathered} \end{array}} \right]$

A matrix with dimension $n×m$, is said to be a square matrix if ________.

• A) $$n \ne m$$
• B) $$n=m$$
• C) $$n > m$$
• D) $$n < m$$

If $A = \left[ {\begin{array}{*{20}{c}} 1&2 \\ 2&0 \end{array}} \right]$ and $B = \left[ {\begin{array}{*{20}{c}} 1&{ - 1} \\ 1&1 \end{array}} \right]$ then $A+B$ = ____________.

• A) $$\left[ {\begin{array}{*{20}{c}} 1&2 \\ 3&4 \end{array}} \right]$$
• B) $$\left[ {\begin{array}{*{20}{c}} 2&{ - 1} \\ 3&1 \end{array}} \right]$$
• C) $$\left[ {\begin{array}{*{20}{c}} 2&1 \\ 3&1 \end{array}} \right]$$
• D) $$\left[ {\begin{array}{*{20}{c}} 2&1 \\ 1&3 \end{array}} \right]$$

Two matrices $A$ and $B$ are said to be confirmable for addition if __________.

• A) they have the same number of columns
• B) they have the same number of rows and columns
• C) they have different dimensions
• D) they have the same number of rows

A photographer wishes to enlarge the picture that is5/2 inches wide by 3 inches to have a new width of 10 inches. What will be the width of enlargement?

• A) 3 inches
• B) 8 inches
• C) 12 inches
• D) 6 inches

${\text{If}}\,P = {\text{Rs}}{\text{.}}\,\,500,T = 4\,{\text{years and }}R = 11\% \,{\text{ then}}\,{\text{the simple interest is }}\_\_\_\_\_\_\_\_\_\_\_\_\_.$

• A) ${\text{Rs}}{\text{. }}200$
• B) ${\text{Rs}}{\text{. }}330$
• C) ${\text{Rs}}{\text{. }}220$
• D) ${\text{Rs}}{\text{. }}320$

On dividing the binomial; x + 1 by a monomial; x we get………

• A) (1/x)+1
• B) 0
• C) 1/x
• D) 2

Let $A$ be an $l×m$ matrix and $B$ be an $m×n$ matrix, then the dimension of the product matrix $AB$ will be equal to __________.

• A) $m×m$
• B) $l×m$
• C) $l×n$
• D) $m×n$

If $A = \left[ {\begin{array}{*{20}{c}} 1&2 \\ 2&0 \end{array}} \right]$ and $B = \left[ {\begin{array}{*{20}{c}} 1&{ - 1} \\ 1&1 \end{array}} \right]$ then $A-B$ will be _________.

• A) $\left[ {\begin{array}{*{20}{c}} 2&{ - 1} \\ 3&1 \end{array}} \right]$
• B) $\left[ {\begin{array}{*{20}{c}} 2&1 \\ 1&3 \end{array}} \right]$
• C) $\left[ {\begin{array}{*{20}{c}} 0&3 \\ 1&{ - 1} \end{array}} \right]$
• D) $\left[ {\begin{array}{*{20}{c}} 1&2 \\ 3&4 \end{array}} \right]$

Annuity is …..

• A) A series of any. payments for a fixed period of time
• B) A series of fixed payment for a fixed period of time
• C) None of these
• D) A series of fixed payment for any period of time

The accumulating factor (AF) used in determining the future value is……

• A) AF = {(1+i)^*(n +1)}/i
• B) AF = {(1+i)^(n) -1}/i
• C) None of these
• D) AF = {(1-i)^(n) +1}/i

$${\text{The }}\,\,{\text{algebraic }}\,\,{\text{expression}},\,\,{x^2} + xy - 6{y^2}{\text{, }}\,\,{\text{is }}\,\,{\text{an }}\,\,{\text{example }}\,\,{\text{of}}\,\,\_\_\_\_\_\_\_\_.$$

• A) $${\text{Both Binomial and polynomial}}$$
• B) $${\text{Binomial}}$$
• C) $${\text{Trinomial}}$$
• D) $${\text{Both trinomial and polynomial}}$$

In word problems, proportions are set up so the corresponding units are either one above the or directly…………………… from one another.

• A) none of these
• B) add
• C) Across
• D) multiply