题目内容
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纠错
A and B are independent events, and the probability that both events occur is $$\frac{1}{2}$$. Which of the following could be the probability that event A occurs? Indicate all such probabilities.
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B$$\frac{1}{4}$$
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C$$\frac{1}{2}$$
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D$$\frac{3}{4}$$
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E1
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A0
C,D,E显示答案