Chapter 2 - Set Theory - 2.3 Venn Diagrams and Set Operations - Exercise Set 2.3 - Page 81: 85

n(A') = 5

n(A') The set A' contains all the elements of U that are not in set A. From the given Venn Diagram III and IV region represents the given set A'. A' = two, six, four, 10,01 There are five elements in A'. n(A') = 5