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2017
03-04

w w w.q b 5 6 8 . c o m_草榴社区地址1024_小天风流史未删节_w w w .147zzz.c o m

6 a304ed86cd7e5e/95eef 0 1f3a292dfw w w 9 1 7 k c o m 全集U={x∈N * |x 6 },集合A={1,3,4.. 答: 2,4},3,5},3 ∵A={1,5}, B ={3,又∵U={x∈N * |x∴A∪ B ={1,∴ C U (A∪ B )={2}