Probability help please

timer Asked: May 1st, 2015

Question description

A bag contains 6 red balls and 7 white balls. Two balls are drawn without replacement. 

(a) What is the probability that the second ball is white, given that the first ball is red? 

 So I have the probability that the first ball is red is 6/13 so the second ball would be (7/12) ( since they never put the first ball back. I would take (6/13)(7/12)...but I keep getting the wrong answer. How do I go about answering this?

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