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Set Theory
easy
0:00.0
If
A
=
{
x
,
y
,
z
}
A = \{x, y, z\}
A
=
{
x
,
y
,
z
}
, how many proper subsets does
A
A
A
have?
A
8
8
8
B
7
7
7
C
6
6
6
D
3
3
3
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