03 随堂消化吸收 1.2014浙江高考设全集UxN|x2,集合AxN|x25,则UA()A B2C5 D2,5解析AxN|xxN|x3,UAxN|2x32,故选B.答案B2已知全集U0,1,2,且UA2,则集合A的真子集共有()A3个 B4个C5个 D6个解析U0,1,2,且UA2,A0,1A的真子集是0,1,共3个,故选A.答案A3设全集UR,集合Xx|x0,Yy|y1,则UY与UX包含关系(UX)_(UY)解析Xx|x0,Yy|y1,UXx|x0,UYy|y1(UX)(UY)答案42015江西三校联考已知集合U1,2,3,4,5,6,7,A2,4,5,7,B3,4,5,则(UA)(UB)_.解析UA1,3,6,UB1,2,6,7,(UA)(UB)1,2,3,6,7答案1,2,3,6,752014湖北襄阳四校高一期中已知全集Ux|x10,xN,A0,2,4,6,8,Bx|xU,x5(1)求Mx|xA且xB;(2)求(UA)(UB)解由题意得全集U0,1,2,3,4,5,6,7,8,9,10,Bx|xU,x50,1,2,3,4,(1)Mx|xA且xB6,8(2)UA1,3,5,7,9,10,UB5,6,7,8,9,10,(UA)(UB)5,7,9,10