The probability that event A occurs given that event B has occurred is written P(A|B)
where P(A|B) = P(A∩B)/P(B).
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Worked solution to a probability question as seen on the 2013 ordinary level paper. Check out KeysToMaths1 for more tutorials and worked solutions: https://www.youtube.com/channel/UCOYoe9L9R13HGUIhszjkeug

Tutorial on finding the probability of dependent events. More free lessons at: http://www.khanacademy.org/video?v=eF6zYNzlZKQ Note: All Khan Academy content is available for free at (www.khanacademy.org)