摘要:12.设全集 U = {1.2.3.4.5.6.7.8}.A = {3.4.5} B = {4.7.8}, 求:(CU A)∩(CU B), (CU A)∪(CU B), CU, CU . ((CU A)∩(CU B)= CU={1,2,6}, (CU A)∪(CU B)=CU ={1,2,3,5,6,7,8})
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