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 Let A and B be two events such that P(AB¯)=1/6P(AB)=1/4 and P(A¯)=1/4, where A¯ stands for 

 complement of event A. Then events A and B are 

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a
equally likely but not independent
b
equally likely and mutually exclusive
c
mutually exclusive and independent
d
independent but not equally likely

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detailed solution

Correct option is D

We have,P(A∪B¯)=16,P(A∩B)=14P(A¯)=14⇒P(A)=1−14=34∴ P(A∪B→)=1−P(A∪B)=1−[P(A)+P(B)−P(A∩B)]⇒ 16=1−34−P(B)+14⇒ P(B)=1−12−16=6−3−16=26=13⇒PA∩B=PAPB=14


Similar Questions

The probability of an event A occuring is 0.4  and of B occuring is 0.2. If A and B are  mutually exclusive events then the probability of neither A nor B occuring is


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