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There are ten a and eight b, randomly select two letters without replacement, then what is the probability that the first letter is a and the second is b?
Give your answer to the nearest 0.01 of a percent.
____%
26.14 显示答案
· 相关考点
6.4.4 条件概率
6.4.4 条件概率
以上解析由 考满分老师提供。
