Question: Show mathematically that for the sets A, B, C AU(B-A) = AUB a) {1, 3, 3, 3, 5, 5, 5, 5, 5}: {5, 3,

Show mathematically that for the sets A, B, C AU(B-A) = AUB 

Show mathematically that for the sets A, B, C AU(B-A) = AUB a) {1, 3, 3, 3, 5, 5, 5, 5, 5}: {5, 3, 1} b) {{1} }, {1, {1}} c) 0,{0}

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