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题目来源1 : OG - 其他版
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难度：5
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What is the ratio of the number of people in group 2 with the ailment sneezing and itchy eyes to the total number of people in both groups with the ailment sneezing and itchy eyes?
Give your answer as a fraction.
11 /17显示答案
以上解析由 考满分老师提供。
