1 ] The events A and B are such that
P(A) = 0.2, P(B) = 0.6 and P(A|B) = 0.3.
(a) P(A∩B), 
(b) P(B|A), 
(c) P(A∪B). 
(d) P(A‘∩B‘). 
2] The events A and B are such that P(A) = 0.5 and P(A∪B) = 0.7. Determine the value of P(B) in each of the cases when
(a) A and B are mutually exclusive, 
(b) A and B are independent, 
(c) P(B|Α) = 0.3. 
My answers are:
b] Cannot understand how to work out
Sorry I couldn't post working, I have it all written down and it was difficult enough to write all of the questions down! If I am wrong, could you please give me a clue towards getting it right and could you please explain how to attempt 2b]?
Thanks if you can answer!