Exercise 9.
Let \(A = \{x \in \N \st 4 \le x \lt 12\}\) and \(B = \{x \in \N \st x \text{ is even}\}\text{.}\)
Find \(A \cap B\text{.}\)
Find \(A \setminus B\text{.}\)
Let \(A = \{x \in \N \st 4 \le x \lt 12\}\) and \(B = \{x \in \N \st x \text{ is even}\}\text{.}\)
Find \(A \cap B\text{.}\)
Find \(A \setminus B\text{.}\)