Question

The order of matrices [123]

Answer 1

Answer:

1×3

Step-by-step explanation:

read as 1 by 3

rows:1

columns: 3

Answer 2

Given,

Matrix [1 2 3].

To find,

Order of the given matrix.

Solution,

The given problem can be solved simply by following the below steps.

It can be said that the order of a matrix is the representation of the number of rows and columns in a matrix. When we observe the numbers horizontally it is said row, and vertically, it is said column.

A matrix with m rows and n columns is said to be of the order $m\times n$.

On the other hand, a square matrix, which consists of the same number of rows and columns (say n) is said to be of the order n.

For example, consider the matrix

$A=\left[\begin{array}{ccc}1&2\\4&5\\7&8\end{array}\right]$

As the above matrix A has 3 rows and 2 columns. Thus, the order of A is $3\times 2$.

Now, as in the given problem,

the number of rows = 1, and,

the number of columns = 3.

⇒ Order = $1\times 3$.

Therefore the order of the matrix [1 2 3] will be $1\times 3$.