Directions: Type your solutions into this document and be sure to show all steps
for arriving at your solution. Just giving a final number may not receive full credit.
Problem 1
Write definitions using elementhood tests for the following sets:
(a) {5, 10, 15, 20, 25, 30, ...}
(b) {−4, −3, −2, −1, 0, 1, 2, 3}
(c) {2, 3, 5, 7, 11, 13, 17, 19, 23, ...}