Let s s be the universal set, where: s = { 1 , 2 , 3 , , 18 , 19 , 20 } s = { 1 , 2 , 3 , , 18 , 19 , 20 } let sets a a and b b be subsets of s s , where: set a = { 2 , 4 , 6 , 12 , 16 , 17 , 19 } a = { 2 , 4 , 6 , 12 , 16 , 17 , 19 } set b = { 3 , 4 , 6 , 7 , 9 , 14 , 16 , 17 } b = { 3 , 4 , 6 , 7 , 9 , 14 , 16 , 17 } find the following: list the elements in the set ( a ∪ b a ∪ b ): ( a ∪ b ) ( a ∪ b ) = { } enter the elements as a list, separated by commas. if the result is the empty set, enter dne list the elements in the set ( a ∩ b a ∩ b ): ( a ∩ b ) ( a ∩ b ) = { } enter the elements as a list, separated by commas. if the result is the empty set, enter dne you may want to draw a venn diagram to answer this question. can someone me