1. Set Notes Day 4

2. How are these two sets related? A={2,3,4,6} and B={5,1,2,4,3} They both have a 2, 3, and 4. This is the intersection. AB U

3. The intersection of two sets A and B is the elements that are in both A and B. ⋂ means “intersection” A ⋂ B reads “A intersection B” The Union of two sets A and B is the elements that are in A or B. This means the elements in just A, in just B, or in both A and B. ⋃ means “Union” A ⋃ B reads “A union B” What is A ⋃ B? A ⋃ B={1,2,3,4,5,6} 6 5 1 AB U 243243

4. Brothers and Sisters UBSUBS