单选题Which of the following choices could be equal to set Z ifX = {2, 5, 6, 7, 9} and Y = {2, 5, 7}X ∪ Y ∪ Z = {1, 2, 3, 4, 5, 6, 7, 8, 9}X ∩ Z = {2, 6}Y ∩ Z = {2}A Z= {1, 4, 8}B Z= {1, 3, 8}C Z= {1, 3, 4, 8}D Z= {1, 2, 3, 4, 6, 8}E Z= {1, 2, 3, 5, 6, 8}
题目
单选题
Which of the following choices could be equal to set Z ifX = {2, 5, 6, 7, 9} and Y = {2, 5, 7}X ∪ Y ∪ Z = {1, 2, 3, 4, 5, 6, 7, 8, 9}X ∩ Z = {2, 6}Y ∩ Z = {2}
A
Z= {1, 4, 8}
B
Z= {1, 3, 8}
C
Z= {1, 3, 4, 8}
D
Z= {1, 2, 3, 4, 6, 8}
E
Z= {1, 2, 3, 5, 6, 8}