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Mathematics
Mathematics
Problem
9. If A and B are two events such that
P
(
A
)
=
1
4
,
P
(
B
)
=
1
2
\mathrm{P}(\mathrm{A})=\frac{1}{4}, \mathrm{P}(\mathrm{B})=\frac{1}{2}
P
(
A
)
=
4
1
,
P
(
B
)
=
2
1
and
P
(
A
∩
B
)
=
1
8
\mathrm{P}(\mathrm{A} \cap \mathrm{B})=\frac{1}{8}
P
(
A
∩
B
)
=
8
1
, find
P
(
not
A
\mathrm{P}(\operatorname{not} \mathrm{A}
P
(
not
A
and not B
)
)
)
.
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