问题
问答题
8 marbles in a bag, 4 red and 4 white. Randomly get 3 marbles out of the bag, what’s the probability that at least 1 of the 3 marbles is red
答案
参考答案：[*]
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8 marbles in a bag, 4 red and 4 white. Randomly get 3 marbles out of the bag, what’s the probability that at least 1 of the 3 marbles is red
参考答案：[*]