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What is the probability of getting atleast 2red balls in the next three draws?
In a box, there are 6 red balls and 7 blue balls. two blue balls are drawn in the first and second draw.assuming the balls are not returned.
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- 1 decade agoFavorite Answer
You have 6 red and 5 blue to start.
6/11 * 5 /10 = 30 / 110 + (you have 2 and don't care)
6/11 * 6/10 * 5/9 = 180 / 990 +
6/11* 5/10 * 5/9 = 150 / 990 =
270 + 180 + 150 = 600 / 990 = 20 / 33 Does that work for you?
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