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Suppose that R and S are reflexive relations on a set A. Prove or disprove each of these statements. (a) RUS is reflexive (b) Rn

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Suppose that R and S are reflexive relations on a set A. Prove or disprove each of these statements. (a) RUS is reflexive (b) Rn S is reflexive (c) R)S is ireflexive

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