Let U={1,2,…,10}U = \{1, 2, \dots, 10\}U={1,2,…,10}. If A={x:x is even}A = \{x : x \text{ is even}\}A={x:x is even} and B={x:x≥7}B = \{x : x \ge 7\}B={x:x≥7}, what is (A∪B)′(A \cup B)'(A∪B)′?
∅\emptyset∅