Question: Let A and B be sets. Prove or disprove that: (a) set union is commutative (This means that for every two sets A and B

Let A and B be sets. Prove or disprove that: (a)

Let A and B be sets. Prove or disprove that: (a) set union is commutative (This means that for every two sets A and B we have AUB (b) A AUB. (e) A An B. BUA

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