PROBLEM 1 [points: 20; each sub problem is 5 pts] Note that there is no universal set present in formulas, "U" there is a sign expressing union operation on sets. Given set expressions, indicate which areas should be shaded, if any, on given Venn diagrams. Be careful about the order of operations. a) (AUB) n (AUC') #2 #5 #6 #1 #3 #4 #7 #8 Solution: area(s)