2012-II-42
Ans: B
$\left\{ \begin{array}{ll}
x^2+y^2+2x-4y-13=0 &#
… Read $\left\{ \begin{array}{ll}
x^2+y^2+2x-4y-13=0 &#
HKDSE-MATH - 2012
2012-II-43
Ans: B
The required number
… Read The required number
$\begin{array}{cl}
= & C^{
2012-II-44
Ans: D
The required probability
… Read The required probability
$\begin{array}{cl}
=
2012-II-45
Ans: A
I must be true. Note that
… Read I must be true. Note that
$\begin{array}{rcl}
m_1 �