Solving Master
Resources for HKDSE Mathematics
留意外心的坐標為 $\left(\dfrac{a}{2}, \dfrac{b}{2} \right
可組成的密碼數量
$\begin{array}{cl} = & 5! \times 2! \\ =
所求的概率
$\begin{array}{cl} = & \dfrac{3}{7} \tim
新的中位數 $x$
$\begin{array}{cl} = & 30 \times (1+50
I 不正確。$S_1$ 的平均值
$\begin{array}{cl} = & \dfrac{