SOLUTION: Let S be the universal set, where: S={1,2,3,...,18,19,20} Let sets A and B be subsets of S, where: Set A={2,3,7,12,15,16,18} Set B={1,2,3,5,7,9,10,11,17} Find the follo

Algebra ->  Subset -> SOLUTION: Let S be the universal set, where: S={1,2,3,...,18,19,20} Let sets A and B be subsets of S, where: Set A={2,3,7,12,15,16,18} Set B={1,2,3,5,7,9,10,11,17} Find the follo      Log On


   



Question 1047217: Let S be the universal set, where: S={1,2,3,...,18,19,20}
Let sets A and B be subsets of S, where:
Set A={2,3,7,12,15,16,18}
Set B={1,2,3,5,7,9,10,11,17}
Find the following:
The number of elements in the set (A∪B): n(A∪B) is

Answer by ikleyn(52817) About Me  (Show Source):
You can put this solution on YOUR website!
.
17 + 1 = 18.