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ZX-599D12E8472025年12月国际B卷 · 第 10 题
2025年12月国际B卷 · 原库模块 1 · Q10 原库参考解析
At a convention center, there are a total of 375 visitors. Each visitor is located in either room A, room B, or room C. If one of these visitors is selected at random, the probability of selecting a visitor who is located in room A is 0.48, and the probability of selecting a visitor who is located in room B is 0.16. How many visitors are located in room C?
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解题思路
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