Get personalized answers to your unique questions on IDNLearn.com. Join our community to receive prompt and reliable responses to your questions from knowledgeable professionals.

4. Write each of the following in set builder form.
(a) A = {5, 10, 15, 20}
(b) B = {1, 2, 3, 6, 9, 18}
(c) C = {P, R, I, N, C, A, L}