關於U1234567A1356的百科

•  已知全集U={1,2,3,4,5,6,7},*A={1,3,5,6},則∁UA等於(　　)(A){1,3,...

• 問題詳情： 已知全集U={1,2,3,4,5,6,7},*A={1,3,5,6},則∁UA等於()(A){1,3,5,6}   (B){2,3,7}(C){2,4,7}    (D){2,5,7}【回答】C解析:由題意知∁UA={2,4,7}.知識點：*與函數的概念題型：選擇題...
• 2019-03-307903