00:01
Okay, so on the paper that you're showing, you've got the answers given to you for question two.
00:07
And it looks like you want to do the same thing for question three.
00:09
So you have a universal set and you've got defined as 1 through 10.
00:15
And then a is the multiples of 5.
00:17
So in that universal set, 5 is a multiple of 5 and 10 is a multiple of 5.
00:23
And that's all there is in our set u.
00:26
And b is going to be the set of even numbers.
00:28
So in our universal set, b is going to be 2, 4, 6, 8, and 10.
00:37
Now, what's the intersection of a and b? do they have anything in common? well, they do.
00:45
They have the number 10 in common, and that's all.
00:48
So that's the intersection.
00:50
So now i can actually start to draw this.
00:53
So here's going to be my a, and then here's going to be b.
01:02
And the intersection is 10, and that's contained in both of them.
01:09
And then for a, in this circle, i have 10, and then i have 5.
01:13
And so that's over here.
01:16
And for b, the stuff that's not in a is going to go in here.
01:20
So we have 2, 4, 6, 8, and then 10 is included in b, but it's also in a.
01:28
Okay.
01:32
So what about the other numbers? well, one is not in a.
01:37
It's not in b.
01:38
So it's just going to go on the outside here.
01:41
Two is already in b.
01:42
Three is not in either one.
01:43
So it comes out here on the outside.
01:45
Four is inside b...