Mathematics

Problem

Find the complement of

C

given: a. a

U = \mathbb{Z}

and

C = \{x \in \mathbb{Z} \mid x \le -5\}

b. b

U = \mathbb{Q}

and

C = \{x \in \mathbb{Q} \mid x \le 2\} \cup \{x \in \mathbb{Q} \mid x \ge 8\}