if P(not A) =0.7 , P(B)=0.7 and P(B/A) =0.5 find P(A/B)

dude use the frmula p(A/B)= P(AintB)/P(B)

P(AunionB)=P(a)+P(B)+P(AintB)
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Hope u will get it

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Hope u got your answer!!

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Solution:-) We have,
P(not A) = 0.7, P(B) = 0.7 and P(B/A) = 0.5

Now, P(A) = 1 - P(not A) = 1 - 0.7 = 0.3

P(B/A) = P(A and B) / P(A)
P(A and B) = P(B/A) x P(A) = 0.5 x 0.3 = 0.15

Hence, P(A/B) = P(A and) / P(B) = 0.15 / 0.7 = 0.21 .Ans.
 
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