I needed these answered!

Part I: Sets (25 pt.) 1. o. Draw a Venn diagram (10 pt., 2.5 pt. each) Let A, B, and C be sets such that A n B n c for each of the following combinations of A, B, and C a. AnBnC. b. (AnB)U (AnC) c. (AnB) U(AnC) d. (A B) U (A - C) U (B - C). 2. (5 pt., 2.5 pt. each) Let A and B be sets. What can we conclude about A and B if we know that: a. AUB=A. b, A-B = A. 3. (5 pt., 2.5 pt. each) Find U1A and nA where: a. A\ - li.i + 1,i +2. .. for every positive integer i. b. Ai = {0i) for every positive integer i. (5 pt., 2.5 pt. each) Let A = {a,b,c,d] and B = {y,z). Find: a. b, 4. AB. B A