Question 1047210
 Let S be the universal set, where: S={1,2,3,...,18,19,20} Let sets A and B be subsets of S, where:? {
A={2,5,6,7,14,18,20} 
B={1,3,4,5,7,8,9,10,11,17,20} 
C={1,2,3,4,6,10,12,14,15,16,17,20} 

Find the number of elements in the set (A∩C) ∩ B n[(A∩C)∩Bc] 
----
(A and C) = n{2,6,14,20} 
-----
(A and C) and B = {20}
B' = {2,6,12,13,14,15,16,18,19}
(A and C) and B' = {-}
====
Ans:: Zero
--------------
Cheers,
Stan H.
--------------