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니 6 3 4 (5 points). There are two boxes. Box (A contains green balls and red balls. Box B contains green balls and red b
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니 6 3 4 (5 points). There are two boxes. Box (A contains green balls and red balls. Box B contains green balls and red b
니 6 3 4 (5 points). There are two boxes. Box (A contains green balls and red balls. Box B contains green balls and red balls. One randomly select a box, with equal chance. Then he randomly pick balls from the box (without returning the ball to the box), and found all balls are red. What is the chance that he was picking balls from box A? 2 2
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