Let
S
be the universal set, where:
S
=
{
1
,
2
,
3
,
...
,
18
,
19
,
20
}

Let sets
A
and
B
be subsets of
S
, where:

Set
A
=
{
6
,
9
,
10
,
15
,
16
,
17
,
18
,
20
}


Set
B
=
{
2
,
3
,
5
,
6
,
7
,
8
,
10
,
11
,
12
,
13
,
14
,
17
,
20
}


Find the following:

LIST the elements in the set (
A
∪
B
):
(
A
∪
B
)
= {
}
Enter the elements as a list, separated by commas. If the result is the empty set, enter DNE

LIST the elements in the set (
A
∩
B
):
(
A
∩
B
)
= {
}
Enter the elements as a list, separated by commas. If the result is the empty set, enter DNE

You may want to draw a Venn Diagram to help answer this question.