The relation R in the set {1, 2, 3} given by R = {(1, 2), (2, 1)} is: (1)
A. reflexive
B. symmetric
C. transitive
D. equivalence
Answer:B
The relation R in the set {1, 2, 3} given by R = {(1, 2), (2, 1)} is: (1)
A. reflexive B. symmetric C. transitive D. equivalence