NDA Math Probability

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Question : 82 of 100
 
Marks: +1, -0
If A and B are two events such that P(A∪B)=
3
4
,P(A∩B)=
1
4
and P(
−
A
)
=
2
3
,then what is P(B) equal to ?
[NDA I 2015]
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