Correct option is (a) {2,1},{1,2,3}
Explanation:
∵ A ={1,2,3} and R = {(1,2),(2,2),(3,1),(3,2)}
Then, R being a subset of A × A, it is a relation on A.
Clearly, 1R2; 2R2; 3R1 and 3R2 .
∴ Domain (R )= {1,2,3} and range (R) = {2,1}
Also, (R−1) = {(2,1), (2,2), (1,3), (2,3)}
Domain (R−1)= {2,1} and range (R-1) = { 1,2,3 }