Question: 4.4.7 Players A and B draw balls in turn, without replacement, from an urn containing three red and four green balls. A draws first. The

4.4.7 Players A and B draw balls in turn, without replacement, from an urn containing three red and four green balls. A draws first. The winner is the person who draws the first red ball. Given that A won, what is the probability that A drew a red ball on the first draw?

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