Maths 9 Chapter 1 Full Chapter MCQs Test

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

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

A square matrix A is symmetric if:

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

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

The idea of matrices was given by _______________.

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

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

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

Which is order of a rectangular matrix?

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

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

The scalar matrix and identity matrices are both _________ matrices.

A square matrix A is skew-symmetric if:

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

Which is order of a square matrix?

 is called _______ matrix.

The order of the matrix   is:

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

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

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

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