If `A=[{:(2,5),(1,3):}]` , find adj `A`.

Explanation

To find the adjoint of the matrix \( A = \begin{pmatrix} 2 & 5 \\ 1 & 3 \end{pmatrix} \), we will follow these steps:

### Step 1: Find the Cofactor Matrix

The cofactor matrix is obtained by calculating the cofactor for each element of the matrix \( A \).

1. **Cofactor of \( a_{11} = 2 \)**:
- Minor of \( a_{11} \): The determinant of the matrix formed by removing the first row and first column, which is just \( 3 \).
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