Class 9 Maths MCQs Tests

Which is order of a square matrix?

The matrix A=\left[ \begin{matrix} 2 & 0 & 0 \\ 0 & 2 & 0 \\ 0 & 0 & 2 \end{matrix} \right] is a ________ matrix.

Matrix A=\left[ \begin{matrix} 1 & 2 \\ 1 & 1 \\ 2 & 3 \end{matrix} \right] is a ______ matrix.

The matrix [2 -1 7] is called a ________ matrix.

If X+\begin{bmatrix} -1 & -2 \\ 0 & -1 \end{bmatrix}=\begin{bmatrix} 1 & 0 \\ 0 & 1 \end{bmatrix}, then X is:

 is called _______ matrix.

If A is a matrix then its transpose is donated by:

Which is order of a rectangular matrix?

The order of the matrix   is:

Every diagonal matrix is not a ________ matrix.

Product of \left[ x\quad \quad y \right] \left[ \begin{matrix} 2 \\ -1 \end{matrix} \right] is:

The idea of matrices was given by _______________.

Order of transpose of \begin{bmatrix} 2 & 1 \\ 0 & 1 \\ 3 & 2 \end{bmatrix} is?

If A=\left[ \begin{matrix} 1 & -2 \\ 3 & 4 \end{matrix} \right] then -A is:

A square matrix A is symmetric if:

The matrix A=\left[ \begin{matrix} 1 & 2 & 3 \\ -1 & 0 & -2 \\ 0 & 1 & 3 \end{matrix} \right] is a ______ matrix.

A=\begin{bmatrix} 0 & 0 \\ 0 & 0 \end{bmatrix} is called ______ matrix.

The matrix A=\left[ \begin{matrix} 1 & 0 & 0 \\ 0 & 1 & 0 \\ 0 & 0 & 1 \end{matrix} \right] is a _______ matrix.

Additive inverse of A=\begin{bmatrix} 1 & -2 \\ 0 & -1 \end{bmatrix} is:

The matrix N=\left[ \begin{matrix} 2 \\ 0 \\ 1 \end{matrix} \right] is a _______ matrix.

The scalar matrix and identity matrices are both _________ matrices.

\left[ \begin{matrix} 3 \\ 1 \end{matrix} \right] \left[ 1\qquad 2 \right] = __________

The matrix A=\left[ \begin{matrix} 0 & 0 & 0 \\ 0 & 1 & 0 \\ 0 & 0 & 3 \end{matrix} \right] is a _______ matrix.

A square matrix A is skew-symmetric if:

If 𝑎, 𝑏 ∈ 𝑅 then only one of 𝑎 < 𝑏 𝑜𝑟 𝑎 = 𝑏 𝑜𝑟 𝑎 > 𝑏 holds is called:

A non-terminating, non-recurring decimal represents:

The conjugate of 5 + 4𝑖 is:

Imaginary part of −𝑖(3𝑖 + 2) is:

Name the property of real numbers used in π+(-π)=0:

The value of 𝑖¹⁸ is:

√3 . √3 is a/an ________ number.

If 𝑍 = −1 − 𝑖 , then 𝑍 (bar) =?

π is a/an ________ number.

Product of a complex number and its conjugate is always a non-negative _______.

Every real number is a:

For any 𝑎, 𝑏, 𝑐 ∈ 𝑅 if 𝑎 > 𝑏 and 𝑏 > 𝑐  then 𝑎 > 𝑐.  Name of the property is:

𝑖⁷ = _________

If 𝑖² = −1 then 𝑖 =?

Real part of 𝟐𝒂𝒃(𝒊 + 𝒊^𝟐) is:

(4)^2/3 with radical sign is:

10⁻² = _________

In ³√35 the radicand is:

If 𝑧 < 0 then 𝑥 < 𝑦 ⇒

The solution set of x²+1=0 is:

\log _{ b }{ a } \times \log _{ c }{ b } can be written as

The relation y=\log _{ z }{ x } implies

log e= _______, where   { e\approx 2.718 } 

The value of \log { \left( \frac { p }{ q } \right) } is

If { a }^{ x }=n,

\log _{ y }{ x }

The logarithm of any number to itself as a base is:

The logarithm of unity to any base is:

\log { { m }^{ n } } can be written as

\log { p\quad - }\log { q } is same as

\sqrt { a } +\sqrt { b } )(\sqrt { a } -\sqrt { b } ) is equal to:

\frac { { a }^{ 2 }-{ b }^{ 2 } }{ a+b } is equal to:

\frac { 1 }{ a-b } -\frac { 1 }{ a+b } is equal to:

{ a }^{ 3 }+{ b }^{ 3 } is equal to:

(3+\sqrt { 2 } )(3-\sqrt { 2 } ) is equal to:

  4x+3y-2  is an algebraic _________.

The degree of polynomial 4{ x }^{ 4 }+3{ x }^{ 2 }y is

Conjugate of surd a+\sqrt { b } is

Factors of a^{ 4 }-4b^{ 4 } are:

Find ‘m’ so that x^{ 4 }+4x^{ 2 }+m is a complete square:

Factors of 5x^{ 2 }-17xy-12y^{ 2 } are:

Factors of x² - 5x + 6 are:

Factors of  8x³+27y³ are:

Factors of 27x^{ 3 }-\frac { 1 }{ x^{ 3 } } are:

Factors of { 3x }^{ 2 }-x-2 are:

What should be added to complete the square of 9a^{ 2 }-12ab ?