Matrices organizes information such as variables and constants and stores them in rows and columns, they are usually named C. Each position in a matrix is called an element.

Example

This matrix

$C=\begin{bmatrix} 1 & 2\\ 3 & 4 \end{bmatrix}$

is made out of two rows and two columns. The element 4 is in row 2 and column 2.

It is common to name a matrix after its dimensions, a matrix named Cm*k has m rows and k columns.

## Video lesson

Find the number of columns and rows in the following matrices

$C=\begin{bmatrix} 1 &0 &4 \end{bmatrix}$