2012-II-44
Ans: D
The required probability
… Read The required probability
$\begin{array}{cl}
=
HKDSE-MATH - 2012 - Paper 2 -
2012-II-45
Ans: A
I must be true. Note that
… Read I must be true. Note that
$\begin{array}{rcl}
m_1 �
2012PP-I-01
Ans: $\dfrac{m^{26}}{n^9}$
$\begin{array}{rl}
& \
… Read $\begin{array}{rl}
& \
2012PP-I-02
Ans: $a=\dfrac{2b-5}{3b}$
$\begin{array}{rcl}
\dfrac{
… Read $\begin{array}{rcl}
\dfrac{
2012PP-I-03
Ans: (a) $(3x-7y)^2$ (b) $(3x-7y)(3x-7y-2)$
… Read -
$\begin{arr
2012PP-I-04
Ans: $\$585$
The selling price of the chair
… Read The selling price of the chair
$\begin{array}
2012PP-I-05
Ans: $0.8\text{ litres}$
Let $x$ litres and $y$ litres be th
… Read Let $x$ litres and $y$ litres be th
2012PP-I-06
Ans: (a) Yes (b) $196$
… Read - Note that the angle between $AO$ and th
2012PP-I-07
Ans: $18^\circ$
$\begin{array}{rcl}
\angle BAC & = &
… Read $\begin{array}{rcl}
\angle BAC & = &
2012PP-I-08
Ans: (a) $A’=(3,4)$, $B’=(5,-2)$ (b) $x-3y-
… Read 2012PP-I-09
Ans: (a) Least value $=0$, greatest value $=3$ (b) $4$
… Read - The le
2012PP-I-10
Ans: (a) $0$ (b) $(x+3)(2x-1)(3x-2)$
… Read - It is given that $f(1)
2012PP-I-11
Ans: (a) $\$52.5$ (b) $60\text{ cm}$
… Read - $C=k_1+k_2x^2$, wher
2012PP-I-12
Ans: (a) $31$ minutes (b) $7.8\text{ km}$ (c) Billy runs fas
… Read 2012PP-I-13
Ans: (a) $8$ (b) (i) $45^\circ$ (ii) No
… Read -
$\begin{array}{rcl
2012PP-I-14
Ans: (a) $\Delta DBC \sim \Delta DOA$ (b) (i) $(0,4)$ (ii) $(
… Read 2012PP-I-15
Ans: (a) $3$ (b) Smaller
… Read - Let $\sigma$ be the standard deviat
2012PP-I-16
Ans: (a) $\dfrac{68}{609}$ (b) $\dfrac{530}{609}$
… Read - The re
2012PP-I-17
Ans: (a) $\dfrac{1}{5}-\dfrac{2}{5}i$ (b) (i) $p=-4$, $q
… Read 2012PP-I-18
Ans: (a) $17.4\text{ cm}$ (b) $71.9^\circ$ (c) When $P$ mov
… Read