Answer:
the desired element lies in the 3rd row and 1st column, and is 25.
Step-by-step explanation:
We are given a 3 by 3 matrix: There are 3 rows and 3 columns.
The symbol a represents the element of this matrix that lines in row m and column 1. Thus, the desired element lies in the 3rd row and 1st column, and is 25.
mn
