Answer:
5 X 5
Step-by-step explanation:
The dimensions of a matrix [tex]$ \implies[/tex] number of rows and columns of that matrix. If it is as an [tex]$ m \times n $[/tex] (read as [tex]$m$[/tex] by [tex]$n$[/tex] it means that it has [tex]$m$[/tex] number of rows and [tex]$n$[/tex] number of columns.
In the given problem, the rows and columns are 5. So, we write it is a [tex]$ 5 \times 5 $[/tex] matrix. We call it a Square matrix, since the number of rows equals the number of columns.
