Mathematics misc (541) MCQs with Answers

$A = \begin{bmatrix} 1 & 0 \\ 0 & 1 \end{bmatrix}$ is called _?

• A.Unit matrix
• B.Null matrix
• C.Singular matrix
• D.Scalar matrix

Past Paper MCQ

Which function is used to find the remainder after division?

• A.ROUND()
• B.DIV()
• C.MOD()
• D.QUOTIENT()

Which of the following properties is not satisfied by matrices?

• A.Matrix addition is associative
• B.Matrix addition is commutative
• C.Matrix multiplication is commutative
• D.Matrix multiplication is associative

The complex number $a + bi$ is pure imaginary if?

• A.$a = -b$
• B.$b = 0$
• C.$a = b$
• D.$a = 0$

If $a < b$ and $b < c$, then $a < c$ would be according to ?

• A.Transitive property
• B.Reflexive property
• C.Symmetric property
• D.Additive property

The transpose of a row matrix is a:

• A.Diagonal Matrix
• B.Row Matrix
• C.Square Matrix
• D.Column Matrix

When the transpose of a set $B$ is equal to $B$ itself, then $B$ is called?

• A.Orthogonal
• B.Skew-symmetric
• C.Singular
• D.Symmetric

If $A = \begin{bmatrix} 5 & 6 \\ 7 & 8 \end{bmatrix}$, then find the determinant of $A$.

• A.$40$
• B.$2$
• C.$-2$
• D.$-40$

If $B = \begin{bmatrix} 4 & 2 \\ 6 & 5 \end{bmatrix}$, find $|B| =$ _?

• A.$32$
• B.$20$
• C.$8$
• D.$14$