The order of a matrix 2&5 &7 is : - Vidyadip

MCQ

The order of a matrix $\begin{bmatrix}2&\text{amp};5 &\text{amp};7 \end{bmatrix}$ is :

A
$3 \times 3$
B
$1 \times 1$
C
$3 \times 1$
✓
$1 \times 3$

✓

Answer

Correct option: D.

$1 \times 3$

Since, Order of a matrix is represented by $m × n,$ where mm is the number of rows and nn is the number of columns.
Given, $\begin{bmatrix}2&\text{amp};5 &\text{amp};7 \end{bmatrix}$ is a matrix in which number of row is $1$ and number of columns are $3.$
$\therefore\begin{bmatrix}2&\text{amp};5 &\text{amp};7 \end{bmatrix}$ is a matrix of order $1 × 3$

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