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Mathematics
Mathematics
Problem
If
n
(
U
)
=
50
n(U) = 50
n
(
U
)
=
50
,
n
(
A
)
=
3
x
n(A) = 3x
n
(
A
)
=
3
x
,
n
(
B
)
=
2
x
n(B) = 2x
n
(
B
)
=
2
x
and
n
(
A
∩
B
)
=
x
=
n
(
(
A
∪
B
)
′
)
n(A \cap B) = x = n((A \cup B)')
n
(
A
∩
B
)
=
x
=
n
((
A
∪
B
)
′
)
, find a. the value of
x
x
x
b.
n
(
A
−
B
)
n(A - B)
n
(
A
−
B
)
.
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