Question

Let $R$ and $S$ be two equivalence relations on a non-void set $A$. Then

• A. $R\cup S$ is equivalence relation
• B. $R\cap S$ is equivalence relation
• C. $R\cap S$ is not equivalence relation
• D. $R\cup S$ is not equivalence relation

Answer 1

Answer: (B)

(B) $R\cap S$ is equivalence relation