Let set `A= (a, b, c)`, then number of possible reflexive relations on set A are

Write the smallest reflexive relation on the set A = (a,b)

If R={(a,a),(a,c),(b,c),(b,b),(c,c),(a,b)} on the set X=(a,b,c) , then how many subsets of R are reflexive relations?

Set A={a,b,c,d} then the number of defined relation in A is

The smallest reflexive relation on the set A {1, 2, 3} is

If the numbers of different reflexive relations on a set A is equal to the number of different symmetric relations on set A, then the number of elements in A is

If the numbers of different reflexive relations on a set A is equal to the number of different symmetric relations on set A, then the number of elements in A is

Let A={(x, y): x, y in z , x^(2)+y^(2) <= 16 }. Then the number of reflexive relations on set A is