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Mathematics
Mathematics
Problem
If
n
(
A
)
=
8
n(A)=8
n
(
A
)
=
8
,
n
(
B
)
=
12
n(B)=12
n
(
B
)
=
12
, and
n
(
A
∩
B
)
=
3
n(A\cap B)=3
n
(
A
∩
B
)
=
3
, find
n
(
A
∪
B
)
n(A\cup B)
n
(
A
∪
B
)
.
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