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  • If P (A ) = 6 / 11 , P (B) = 5 / 11 and P (A ∪ B) equal to 7 by 11 , find (i) P (A ∩ B)

Q. 5.     If  P(A)=\frac{6}{11},P(B)=\frac{5}{11}   and P(A\cup B)=\frac{7}{11}. ,  find

              (i)  P(A\cap B)

Answers (1)

best_answer

Given in the question 

P(A)=\frac{6}{11},P(B)=\frac{5}{11}   and P(A\cup B)=\frac{7}{11}.

By using formula:

p(A\cup B)=p(A)+p(B)-p(A\cap B)

          \frac{7}{11}=\frac{6}{11}+\frac{5}{11}-p(A\cap B)

 p(A\cap B)=\frac{11}{11}-\frac{7}{11}

p(A\cap B)=\frac{4}{11}

Posted by

seema garhwal

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