SOLUTION: P(A) = 0.56, P(A and B) = 0.15, find P(B)

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Question 1168708: P(A) = 0.56, P(A and B) = 0.15, find P(B)
Found 2 solutions by Boreal, ikleyn:
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
P(A or B)=P(A)+P(B)-P(A and B)
if we assume P(A OR B) is everything, or 1,
then 1=0.56+P(B)-0.15
and P(B)=0.59

Answer by ikleyn(52776) About Me  (Show Source):
You can put this solution on YOUR website!
.

Under given condition, million valid answers are possible.


The given condition DOES NOT DEFINE  P(B) by an unique way,


and P(B)  CAN NOT be defined/found by an unique way.

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Be aware,  it is a  FAKE  problem,  INCORRECTLY  posed.