设A={3,5,6,8},B={4,5,7,8},求AnB,AUB

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设A={3,5,6,8},B={4,5,7,8},求AnB,AUB
设A={3,5,6,8},B={4,5,7,8},求AnB,AUB

设A={3,5,6,8},B={4,5,7,8},求AnB,AUB