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Style control - access keys in brackets
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Challenge question
If
A
,
B
,
C
are three events, show that
P
(
A
c
∩
(
B
∪
C
)
)
=
P
(
B
)
+
P
(
C
)
-
P
(
A
∩
B
)
-
P
(
A
∩
C
)
-
P
(
B
∩
C
)
+
P
(
A
∩
B
∩
C
)
.