Part I: Truey'T'alse (3U pts, 2 pts each) 1.Anyset Aandwffh BQA and fZBAbeal-l and onto, then B=A 2. Let A and B be nonempty sets and f } B be a 1-] function. Then I Y) =X] l') for all nonempty subsets X and YofA. 3. There is no oneto-one correspondence between the set of all positive integers and the set of all odd positive integers because the second set is a proper subset of the rst. 4. gr(AUsgAUC}mensgC