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Question

Evaluate: P(AB), if 2P(A)=P(B)=513 and P(A|B)=25.

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Solution

2P(A)=513p(A)=526,P(B)=513
P(A|B)=P(AB)P(B)25=P(AB)513
P(AB)=213
P(AB)=P(A)+P(B)P(AB)
=526+513213=1126

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