2015-II-44

16-06-2021 app.cch No Comments

Ans: D
The required probability

$\begin{array}{cl} = & \frac{1}{2} \times \frac{4}{6} + \frac{1}{2} \times \frac{3}{4} \\ = & \frac{17}{24} \end{array}$

2015, HKDSE-MATH, Paper 2 Probability