00:01
Okay, i want to work out which areas correspond to a complement, overlapping b complement, overlapping c complement.
00:09
So what you do here is do each one separately.
00:13
In red, i will just shade a complement.
00:16
And it's outside of circle a.
00:19
It's ignore b and c completely.
00:22
Just shade the area outside circle a in a given color.
00:27
I do it red.
00:28
Then we'll do b complement in green.
00:33
So again, ignore a and c completely.
00:36
Just shade everywhere outside of circle b like this.
00:44
And then we do c same way.
00:47
Ignore a and b.
00:48
Just shade everywhere outside circle c.
00:57
Look carefully like that.
01:00
Now, these symbols here mean intersection or overlap.
01:06
So where does the green, the red and the blue overlap? only on the outside, nowhere else.
01:16
That means then my answer is simply outside of the three circles...