A relation R defined on the set A = {1,2,3,5} as
{(x, y): x+y >10: x,y ∈ A }is
Zero relation
Empty relation
Universal relation
Identity relation
Here R = {(x, y): x + y >10: x, y ∈ A }
Sum of none of the two elements of A is more than 10 and hence R is an empty relation.