First, calculate A×A.
A×A = {(2, 2), (2, 3), (2, 5), (3, 2), (3, 3), (3, 5), (5, 2), (5, 3), (5, 5)}
Since, R is a subset of A × A, it’s a binary relation on A.
The domain of R is the set of first co-ordinates of R
Dom(R) = {2, 3}
The range of R is the set of second co-ordinates of R
Range(R) = {3, 5}