HKCEE - 2010 - Paper 2 -

2010-II-52

Ans: D

Denote $A$ the centre of the required circle and $N$ th

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2010

2010-II-53

Ans: A
The required probability

$\begin{array}{cl}
=

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2010

2010-II-54

Ans: B
A may be false. It is because we do not know the actual am

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2010

2011-I-01

Ans: $k=\dfrac{5t}{m-4}$
$\begin{array}{rcl}
\dfrac{m

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2011

2011-I-02

Ans: $\dfrac{x^{57}}{y^6}$
$\begin{array}{cl}
& \

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2011

2011-I-03

Ans: (a) $(9m+n)(9m-n)$ (b) $(9m-n)(9m+n+2)$

$\begin{ar

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2011

2011-I-04

Ans: (a) $8\ 090$ (b) $8\ 100$ (c) $8\ 091.190$

$8~090$
$8~10

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2011

2011-I-05

Ans: $6$
$\begin{array}{rcl}
\dfrac{6\times4+9\times7

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2011

2011-I-06

Ans: $78$
Let $x$ and $y$ be the original number of boys and gi

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2011

2011-I-07

Ans: (a) $\$198$ (b) Loss

The selling price of the birthday c

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2011

2011-I-08

Ans: (a) $(-5,1)$ (b) Yes

Note that the coordinates of $B$ ar

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2011

2011-I-09

Ans: (b) $42^\circ$

In $\Delta ABD$ and $\Delta ACD$,
$\bec

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2011

2011-I-10

Ans: (a) Median $=57$, range $=52$, inter-quartile range $

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2011

2011-I-11

Ans: (a) $f(x)=x^2-12x$ (b) (i) $-36$ (ii) $256$

Let $f(x)=

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2011

2011-I-12

Ans: (c) $10$

In $\Delta ABP$ and $\Delta PCD$,
$\begin{arr

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2011

2011-I-13

Ans: (a) $60\text{ mm}$ (b) $36\text{ mm}$ (c) Yes

Let $OX= R

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2011

2011-I-14

Ans: (a) $\dfrac{19}{24}$ (b) (i) $\dfrac{5}{9}$ (ii) $\d

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2011

2011-I-15

Ans: (a) $\begin{array}{|c|c|c|c|} \hline
4 & 5

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2011

2011-I-16

Ans: (a) $3x-8y+8=0$ (b) $(16,7)$ (c) (i) $(x-16)^2+(y-7)

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2011

2011-I-17

Ans: (a) (i) $25.1\text{ cm}$ (ii) $41.4^\circ$ (iii) $15.

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2011