00:01
Suppose i have three different circles.
00:03
Okay, so let's review some notation.
00:06
Recall that if i have a u, that means union or what's in either or.
00:11
Upside down you means intersection, which is what is an and.
00:15
And if i have something prime, like a prime, this is a complement of a or what's not in that set.
00:23
So i have some letters.
00:26
First, let's denote what's happening here.
00:27
So i have a.
00:30
I'm trying to find a and b, union c complement.
00:35
Okay, so kind of like order of operations.
00:38
Let's look for in the parentheses outward.
00:40
So i want to find b or c.
00:42
So anything in b or c, so that would be any of these values in b and any of these values in c.
00:48
So what are those values? so that's going to be x, y, r, z...