00:01
Use a very diagram to list elements of the set in roster 4.
00:09
So we have set a and we also have set b.
00:59
And this is 11, 14, this is 12, 15, and 16.
01:13
So in the intersection part, we have 13 and 17.
01:21
And the universal set contains two elements, contains other two elements, 18 and 19.
01:29
So now the question is, what is the complement of a union b? okay, we know what is a union b? so a union b equals 11, 12, 13, 14, 15, 16, 17.
02:36
This is a union b...