Gaokao Math Practice Question
某地区空气质量监测资料表明, 一天的空气质量为优良的概率是 0.75 , 连续两天为优良的概率是 0.6, 已知某天的空气质量为优良, 则随后 一天的空气质量为优良的概率是 ($\qquad$)
- A.0.8
- B.0.75
- C.0.6
- D.0.45
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