Answer to Question #331618 in Discrete Mathematics for Raghad

Question #331618

Given R is a relation from A = {1,2,3,4,5}, R={(1,1),(2,2),(2,3),(2,4),(3,3),(4,4),(4,5)}.

Is R an equivalence relation?

Expert's answer

Since "(2,3) \\in R" , but "(3,2) \\notin R" then R is not a symmetric relation, and therefore is not an equivalence relation.

Answer: No

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