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PSAT 8/9 P2 · 第 6 题

PSAT 8/9 P2 · 原库模块 1 · Q6 原库参考解析

\( -13,\ 4,\ 23 \) 
A data set of three numbers is shown. If a number from this data set is selected at random, what is the probability of selecting a negative number?
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