Question 826033
Find the difference between the number of elements in the union and the intersection of the following sets:

 M = {2, 4, 6, 8, 10, 12} and N = {1, 3, 5, 7, 9, 11}

the union is : M U N= {2,4,6,8,10,12} U {1,3,5,7,9,11}={1,2,3,4,5,6,7,8,9,10,11,12}

the number of elements in union is {{{12}}}

the intersection is: M ∩ N= { 0 }...there is no same elements in the set M that belong to set N 

so, the cardinality (count of elements in a set) is {{{zero}}}


and answer to your question, the difference between the number of elements in the union and the intersection of the following sets: M = {2, 4, 6, 8, 10, 12} and N = {1, 3, 5, 7, 9, 11}, is {{{12-0=12}}}