Question: LetS S be the universal set, where: S = { 1 , 2 , 3 , ... , 18 , 19 , 20 } S={1,2,3,...,18,19,20}
LetS
S
be the universal set, where:
S
=
{
1
,
2
,
3
,
...
,
18
,
19
,
20
}
S={1,2,3,...,18,19,20}
Let setsA
A
andB
B
be subsets ofS
S
, where:
SetA
=
{
3
,
8
,
9
,
10
,
11
,
14
,
15
,
17
,
19
,
20
}
A={3,8,9,10,11,14,15,17,19,20}
SetB
=
{
1
,
8
,
9
,
14
,
16
,
17
}
B={1,8,9,14,16,17}
SetC
=
{
1
,
2
,
3
,
4
,
5
,
7
,
8
,
10
,
11
,
16
,
18
,
20
}
C={1,2,3,4,5,7,8,10,11,16,18,20}
Find the number of elements in the set(
A
B
C
)
(ABC)
n
(
A
B
C
)
n(ABC)
=
Find the number of elements in the set(
A
B
C
)
(ABC)
n
(
A
B
C
)
n(ABC)
=
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