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Other
Engineering Mathematics
Independent and Dependent Events
E1 and E2 are...
Question
E
1
a
n
d
E
2
are events in a probability space satisfying the following constraints
P
(
E
1
)
=
P
(
E
2
)
;
P
(
E
1
∪
E
2
)
=
1
;
E
1
a
n
d
E
2
are independent then
P
(
E
1
)
=
A
0
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B
1
4
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C
1
2
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D
1
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Solution
The correct option is
D
1
L
e
t
P
(
E
1
)
=
P
(
E
2
)
=
p
then using Addition theorem of probability
P
(
E
1
∪
E
2
)
=
P
(
E
1
)
+
P
(
E
2
)
−
P
(
E
1
∩
E
2
)
[
∵
i
n
c
a
s
e
o
f
i
n
d
e
p
e
n
d
e
n
t
e
v
e
n
t
s
P
(
E
1
∩
E
2
)
=
P
(
E
1
)
P
(
E
2
)
]
1
=
p
+
p
−
p
2
o
r
p
2
−
2
p
+
1
=
0
o
r
p
=
1
Suggest Corrections
1
Similar questions
Q.
If
E
1
and
E
2
are two events such that
P
(
E
1
)
=
1
4
,
P
(
E
2
E
1
)
=
1
2
and
P
(
E
1
E
2
)
=
1
4
,
then which of the following is/are correct?
Q.
E
1
and
E
2
are two events such that
P
(
E
1
)
=
1
4
,
P
(
E
2
E
1
)
=
1
2
and
P
(
E
1
E
2
)
=
1
4
, then
Q.
If
E
1
and
E
2
are two events such that
P
(
E
1
)
=
1
/
4
,
P
(
E
2
/
E
1
)
=
1
/
2
and
P
(
E
1
/
E
2
)
=
1
/
4
, then
Q.
If
E
1
and
E
2
are two events such that
P
(
E
1
)
=
1
4
,
P
(
E
2
)
=
1
2
;
P
(
E
1
E
2
)
=
1
4
,
then choose the correct options.
Q.
For any two independent events
E
1
and
E
2
,
P
{
(
E
1
∪
E
2
)
∩
(
¯
¯¯¯¯
¯
E
1
)
∩
(
¯
¯¯¯¯
¯
E
2
)
}
is
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