摘要:已知集合A={1,3,5,7,9}.B={0,3,6,9,12}.则A∩(∁NB)= ( ) A.{1,5,7} B.{3,5,7} C.{1,3,9} D.{1,2,3} 解析:∵A={1,3,5,7,9}.B={0,3,6,9,12}. ∴∁NB={1,2,4,5,7,8.--}. ∴A∩(∁NB)={1,5,7}. 答案:A
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