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ZX-A48CB9F86A2026年5月国际B卷(易) · 第 18 题
2026年5月国际B卷(易) · 原库模块 1 · Q18 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 0.76, 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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