Today in class we were asked to shade the regions of a triple venn diagram where the rules applied. Two of the questions stumped me as I wasn't sure how to handle the mixture and priority of the rule. These were the two questions:

Shade the regions:

1) $(A' \cap B') \cup C$

2) $(A \cap B) \cup C$

Would you be able to display on a venn diagram example showing how to do these?

  • $\begingroup$ Remember that intersection "$\cap$" corresponds to and; union "$\cup$" corresponds to or. $\endgroup$ Mar 9, 2014 at 5:13
  • $\begingroup$ @Rohan: PLEASE don't go on retagging benders after deciding that a new tag is needed without some input from the community first. Namely, wait a few days and let people decide if this is a good idea for a tag. You should speed things up by opening a meta thread. (In recent memory.) $\endgroup$
    – Asaf Karagila
    Dec 18, 2017 at 14:28
  • $\begingroup$ @AsafKaragila Sorry sir. Will definitely do as per your suggestion. $\endgroup$
    – user371838
    Dec 18, 2017 at 14:29
  • $\begingroup$ @Rohan: In case you missed it, math.meta.stackexchange.com/questions/27601 $\endgroup$
    – Asaf Karagila
    Dec 21, 2017 at 15:41

1 Answer 1


For number 1: diagram1.

For number 2: diagram2.

I would recommend trying to figure out how to draw these diagrams before you look at the answers. They are not very difficult, just make sure you have pencil and eraser handy.


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