题目内容
设全集U={4,5,6,7,8},集合M={5,8},N={1,3,5,7,9},则N∩(CUM)=( )
| A.{5} | B.{7} | C.{5,7} | D.{5,8} |
因为全集U={4,5,6,7,8},集合M={5,8},
所以CUM={4,6,7},
N∩(CUM)={1,3,5,7,9}∩{4,6,7}={7},
故选B.
所以CUM={4,6,7},
N∩(CUM)={1,3,5,7,9}∩{4,6,7}={7},
故选B.
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