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Question

lt is given that the events A and B are such that P(A)=14,P(AB)=12 and P(BA)=23 then P(B)=

A
16
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B
13
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C
23
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D
12
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Solution

The correct option is B 13
P(BA)=P(AB)P(A)
Using this formula, we get P(AB)=16
Now P(AB)=P(AB)P(B)
then, P(B)=13

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