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ZX-4095D84D7E2026年6月国际B卷 · 第 20 题
2026年6月国际B卷 · 原库模块 2 · Q20 参考答案
A research study categorized 100 vehicles as either fuel efficient or fuel inefficient. If a vehicle from the study is selected at random, the probability of selecting a vehicle that was categorized as fuel efficient is \( \frac{64}{100} \). How many of the vehicles in the study were categorized as fuel efficient?
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