Set Theoryeasy
0:00.0

Let UU be the universal set of single-digit positive integers {1,2,3,4,5,6,7,8,9}\{1, 2, 3, 4, 5, 6, 7, 8, 9\}. If set AA is the set of all odd single-digit positive integers, and set BB is the set of all even single-digit positive integers, what is the intersection of their complements, AcBcA^c \cap B^c?