题目4单选题
假定全集E={1, 2, 3, 4, 5, 6, 7, 8, 9, 10},则1111100000∨1010101010所得的位串表示的集合是( )A. {1,3,5,7,9}B. {1,2,3,4,5,6,7,8,9,10}C. {1,2,3,4,5}D. {1, 2,3, 4,5, 7, 9}
题目7单选题
A={x∈R|0≤x<2}, B={x∈R|1≤x<3}, 则A与B的对称差集=( )A. [0,2)∪[1,3)B. [0,1)∪[2,3)C. [0,1]∪[2,3)D. [0,2]∪[1,3]