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
=
{
4
,
10
,
12
,
13
,
16
,
17
,
18
,
19
,
20
}
Set
B
=
{
2
,
5
,
6
,
10
,
11
,
12
,
14
,
17
,
18
,
19
,
20
}
Find the following:
The number of elements in the set (
A
∪
B
):
n
(
A
∪
B
)
=
The number of elements in the set (
A
∩
B
):
n
(
A
∩
B
)
is