SOLUTION: Let U = {21, 22, 23, 24, 25, 26, 27}, B = {21, 24, 25, 27}, and C = {23, 24, 26, 27}. List all the members of the sets. (Enter solutions from smallest to largest. If there are any

Question 475213: Let U = {21, 22, 23, 24, 25, 26, 27}, B = {21, 24, 25, 27}, and C = {23, 24, 26, 27}. List all the members of the sets. (Enter solutions from smallest to largest. If there are any unused answer boxes, enter NONE in the last boxes.)
B = { , , }
C= { , , }
The B and C both have lines on top of them. What and how do you get an answer for this one? Can I please get some insight on this problem for my homework assignment? Thank you and have a blessed day!
Answer by Edwin McCravy(20055) (Show Source): You can put this solution on YOUR website!

_
B  means B-complement. It means the set of all elements (or members)
that are in the universal set U but which are not in B.

So since B = {21, 24, 25, 27}, then the set B-complement,
is: 
_
B = {22, 23, 26} 

because that is the set of all the elements 
(members) of the universal set U that are not elements 
(members) of B.

Since C = {23, 24, 26, 27}, then the set C-complement,
is:
_
C = {21, 22, 25}

because that is the set of all the elements 
(members) of the universal set U that are not elements 
(members) of C.
 
Edwin

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