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Question

If P(A)=0.8,P(B)=0.5 and P(BA)=0.4 find P(AB).

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Solution

P(A)=0.8,P(B)=0.5 and P(BA)=0.4
We know that P(BA)=P(BA)P(A)

0.4=P(BA)0.8

P(BA)=0.4×0.8=0.32

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