Exercise 14 Page 218

First, we will write B and D in roster form. B&={0, 2, 4, 6, 8} D&={1, 3, 5, 7, 9} The union of two sets is the set that contains all elements found in both sets. Therefore, the union of B and D holds all elements that are in both B and D. Note that a union only contains unique values, so if any elements exist in both sets, we will cross out the duplicates. In this case, B and D do not hold any common elements so we do not have to cross out anything. B ⋃ D={0, 1, 2, 3, 4, 5, 6, 7, 8, 9}