2007-II-33

16-06-202121-06-2023 app.cch No Comments

Ans: A
The required probability

$\begin{array}{cl} = & \frac{1}{5} \times \frac{2}{4} + \frac{1}{5} \times \frac{2}{4} + \frac{1}{5} \times \frac{2}{4} + \frac{1}{5} \times \frac{2}{4} \\ = & \frac{2}{5} \end{array}$

2007, HKCEE, Paper 2 Probability

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