Question
Which of the following relations is symmetric but neither reflexive nor transitive for a set A = {1, 2, 3}.
Options :
R = {(1, 2), (1, 3), (1, 4)}
R = {(1, 2), (2, 1)}
R = {(1, 1), (2, 2), (3, 3)}
R = {(1, 1), (1, 2), (2, 3)}
Answer :
R = {(1, 2), (2, 1)}
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