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 November 25th, 2016, 12:19 AM #1 Newbie   Joined: Nov 2016 From: Texas Posts: 12 Thanks: 0 Any hint in how to simplify a set theory expression Simplify $\overline {\overline{(A \cup B) \cap C} \cup \overline B}$ I'm encountering difficulty with this question. I find it really difficult to understand sets in general when I go to my classes. Could someone please explain this to me? I am not looking for a straight answer, just hoping on some useful guidance and information to help me understand the question better, and how to solve it. Here is a link to the question in a tab. https://instructure.codecogs.com/png...verline%20B%7D Thanks! Last edited by skipjack; November 25th, 2016 at 07:30 PM. Reason: to use your latex code
 November 25th, 2016, 08:24 PM #2 Global Moderator   Joined: Dec 2006 Posts: 20,629 Thanks: 2077 You need to know these rules: $\displaystyle \overline{A \cap B} = \overline{A} \cup \overline{B}$ and $\displaystyle \overline{A \cup B} = \overline{A} \cap \overline{B}$, and the rules here.

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