Probability
We know, P(AUB)=P(A)+P(B)-P(AnB).
What if you've been given all the above and you've been asked to find: P(AnB') ,P(A'nB) and P(A'nB').
What if you've been given all the above and you've been asked to find: P(AnB') ,P(A'nB) and P(A'nB').
Original post by Ethel abena
We know, P(AUB)=P(A)+P(B)-P(AnB).
What if you've been given all the above and you've been asked to find: P(AnB') ,P(A'nB) and P(A'nB').
What if you've been given all the above and you've been asked to find: P(AnB') ,P(A'nB) and P(A'nB').
Drawing a venn diagram should help, mark on what you know and the approriate areas which represet what you want to find.
Yes, a Venn diagram is very helpful.
Also, don't forget relations like P(A) = P(AnB) + P(AnB') (obviously because B and B' are mutually exclusive)
Also, don't forget relations like P(A) = P(AnB) + P(AnB') (obviously because B and B' are mutually exclusive)
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