【题文】设U="{1,2,3,4,5}," A="{1,2,3}," B="{2,4}," 则A∪ =
【题文】设U="{1,2,3,4,5}," A="{1,2,3}," B="{2,4}," 则A∪ =
题型:难度:来源:
【题文】设
U="{1,2,3,4,5},"
A="{1,2,3},"
B="{2,4}," 则
A∪
=
答案
【答案】
解析
【解析】略
举一反三
【题文】设
U="{1,2,3,4,5},"
A="{1,2,3},"
B="{2,4}," 则
A∪
=
【题文】
【题文】
最新试题
热门考点