{1,3,5,7}属于A,{1,3,5,7}不属于B
U=A∪B={1,2,3,4,5,6,7,8,9,10}
所以A={1,3,5,7}或含有1,3,5,7包含于U的集合
B=｛2,4,6,8,9,10｝