1.

Let A and B be two non-empty relations on a set S. Which of the following statements is false?

A. A and B are transitive ⇒ A∩B is transitive
B. A and B are symmetric ⇒ A∪B is symmetric
C. A and B are transitive ⇒ A∪B is not transitive
D. A and B are reflexive ⇒ A∩B is reflexive
Answer» D. A and B are reflexive ⇒ A∩B is reflexive


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