SOLUTION: https://ibb.co/jJXK0jQ

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Question 1176877: https://ibb.co/jJXK0jQ
Answer by MathLover1(20850)   (Show Source): You can put this solution on YOUR website!

U={1,2,3,4,5,6}
A={1,3,4,5}
B={1,2,3}
C={2,3,4,5,6}
A U B U C=U={1,2,3,4,5,6}
there is no elements in complement, so
(A U B U C)’= is the empty set

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