Let U={1,2,3,4,5,6}U = \{1, 2, 3, 4, 5, 6\}U={1,2,3,4,5,6}. If A={1,2}A = \{1, 2\}A={1,2} and B={2,3}B = \{2, 3\}B={2,3}, find A′∩B′A' \cap B'A′∩B′.
∅\emptyset∅
{4,5,6}\{4, 5, 6\}{4,5,6}
{1,2,3}\{1, 2, 3\}{1,2,3}
{4,5,6,1}\{4, 5, 6, 1\}{4,5,6,1}