Section 3 [25 pts (15,10)]: Sets 1. In this problem A = { R2D2, C3PO, BB8} and B = {BB8, R5D4}. |A| denotes the cardinal- ity (number of members) of the set A. Answer each question with an integer or an expression involving exponents. You do not need to show each step. i. [A x B| =? ii. [A - B| =? iii. [(A - B) n(B - A)| =? iv. IP(AAB)I =? v. Kx : x EP(AUB) A |x] = 2}1 =