Item 0.3.9.b.

\(A \setminus B\) is the set of all elements that are in \(A\) but not \(B\text{.}\) So this is \(\{x \in \N \st 4 \le x \lt 12 \wedge x \text{ is odd}\} = \{5,7,9,11\}\text{.}\)

Note this is the same set as \(A \cap \overline{B}\text{.}\)

in-context