00:01
Okay.
00:02
So your universal set is 012 from 0 to 9.
00:06
Your a is 0157.
00:09
B is 2, 3, 5, and 8, and c is 5 .9.
00:15
So on a, when it has that little line over it, it's everything not a union b, union c.
00:22
That union means everything in a, everything in b, everything in c.
00:27
So what is not in those? so you've got to go back to your universal set.
00:32
We have zero and a.
00:34
We have one.
00:35
We have two.
00:37
We have a three.
00:37
We do not have a four.
00:41
We have a five.
00:44
We don't have a six.
00:46
We have a seven.
00:47
We have an eight.
00:48
We have a nine.
00:49
So this is a.
00:52
B.
00:54
Where does a intersect with b, union c? so everything in b and c, where does a intersect with those two? a, it does not intersect.
01:06
Intersect at zero, it does not intersect at one.
01:08
So you're looking for your overlap.
01:09
Where are those two overlap? so that only overlaps with five.
01:17
Not a intersect, not b.
01:22
So we're going to start with this.
01:23
What is not in a and not in b? so not an a...
