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
=
{
1
,
2
,
4
,
5
,
6
,
7
,
8
,
9
,
10
,
11
,
17
,
18
}
A={1,2,4,5,6,7,8,9,10,11,17,18}
SetB
=
{
4
,
6
,
7
,
12
,
13
,
14
}
B={4,6,7,12,13,14}
SetC
=
{
4
,
7
,
8
,
9
,
11
,
13
,
19
,
20
}
C={4,7,8,9,11,13,19,20}
Find the number of elements in the set(
A
C
)
B
c
(AC)Bc
n
[
(
A
C
)
B
c
]
n[(AC)Bc]
=
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