Q1.1.4: Universal Sets and Complements

Let

$U = \{1, 2, 3, 4, x, y\}$ be a universal set with subsets $X = \{1, 2, 3, x, y\}$, $Y =\{2, 4, y\}$, and $Z = \{2, x\}$. Use intersections, unions, and complements to express each of the following sets in terms of $X$, $Y$, and $Z$.