U1234567A1356的精選

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

2019-03-30

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...