Question

If A = {1, 2}, then write all non-zero relations defined in A.

Answer 1

All non-zero relation are:

{(1, 1)}, {(2, 2)}, {(1, 2)}, {(2, 1)}
{(1, 1), (1, 2)}, {(1, 1), (2, 1)}, {(2, 2), (1,2)}, {(2, 2), (2, 1)}, {(1, 2), (2, 1)}

{(1, 1), (2, 2), (1, 2)}, {(1, 1), (2, 2), (2, 1)}, {(1, 1), (1, 2), (2, 1)}, {(2, 2), (1, 2), (2, 1)}

{(1, 1), (1, 2), (2, 1), (2, 2)}