Gaokao Math Practice Question
4. 生物实验室有 5 只兔子, 其中只有 3 只测量过某项指标, 若从这 5 只兔子中随机取出 3 只, 则恰有 2 只测量过该指标的概率为
- A.$\frac{2}{3}$
- B.$\frac{3}{5}$
- C.$\frac{2}{5}$
- D.$\frac{1}{5}$
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