Set Theoryhard
0:00.0

Let U={1,2,3,4,5,6,7,8,9,10}U = \{1, 2, 3, 4, 5, 6, 7, 8, 9, 10\}. Let A={xU:x is prime}A = \{x \in U : x \text{ is prime}\} and B={xU:x is even}B = \{x \in U : x \text{ is even}\}. What is n(AB)n(A \setminus B)?