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Q.7   Given that the eventsA and B are such that P(A)=12,P(A\cup B)=\frac{3}{5}   and P(B)=p. Find p if they are

             (ii) independent

Answers (1)



          P(A)=\frac{1}{2},P(A\cup B)=\frac{3}{5}

Also, A and B  are independent events means

 P(A\cap B) = P(A).P(B).   Also P(B)=p.

 P(A\cap B) = P(A).P(B)=\frac{p}{2}

     P(A\cup B)=P(A)+P(B)-P(A\cap B)




Posted by

seema garhwal

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