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Engineering Mathematics
Independent and Dependent Events
What is the O...
Question
What is the OR rule in probability?
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Solution
OR rule:
In probability, OR
means the occurrence of either of the events.
It is treated as a union of sets.
If
A
and
B
are two events, then
P
A
o
r
B
=
P
A
+
P
B
-
P
A
a
n
d
B
Or
P
A
∪
B
=
P
A
+
P
B
-
P
A
∩
B
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