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If one letter is to be randomly selected from the 7 letters in the word JOHNSON and one letter is to be randomly selected from the 5 letters in the word JONES, what is the probability that the two selections will be the same letter?
Give your answer as a fraction.
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· 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。
