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Two containers, each with some white and black balls. Container T includes 20 white and 30 black balls. When selecting one ball out of each box, the possibility of getting 2 white balls is 0.3, what is the probability of getting black ball from U?
Give your answer as a decimal.
Give your answer as a decimal.
0.25 显示答案
· 相关考点
6.4.3 独立事件
6.4.3 独立事件
以上解析由 考满分老师提供。
