Let the sets be A={2,4};B={3,3};C={0,1}
The cartesian product is given as A×B×C
A×B×C={(2,3,0),(2,3,1),(4,3,0),(4,3,1)}
Empty relation on a set A is the subset of Cartesian product A × A
Universal relation on set A and Cartesian product A × A has the same elements