2011-II-09
Ans: B
Note that the first term is $4$ and the common differen
… Read Note that the first term is $4$ and the common differen
HKCEE
2011-II-10
Ans: C
The required interest
… Read The required interest
$\begin{array}{cl}
= & \
2011-II-11
Ans: B
Let $\ell_0$ and $b_0$ be the original value of the len
… Read Let $\ell_0$ and $b_0$ be the original value of the len
2011-II-12
Ans: B
$\begin{array}{rcl}
\dfrac{2m-n}{m-2n} & = &
… Read $\begin{array}{rcl}
\dfrac{2m-n}{m-2n} & = &
2011-II-13
Ans: C
Let $a=\dfrac{kb}{c^2}$, where $k$ is a non-zero con
… Read Let $a=\dfrac{kb}{c^2}$, where $k$ is a non-zero con
2011-II-14
Ans: B
According to the figure, $p\approx -4$, $q \approx -2
… Read According to the figure, $p\approx -4$, $q \approx -2
2011-II-15
Ans: A
Add a point $X$ on the figure as shown.
… Read Add a point $X$ on the figure as shown.
In $\Delta ABX$,
2011-II-16
Ans: C
Let $\theta$ be the angle at centre of the sector. Then
… Read Let $\theta$ be the angle at centre of the sector. Then
2011-II-17
Ans: C
… Read Let $x\text{ cm}$ be the length of the hypotenuse of th
2011-II-18
Ans: B
$\begin{array}{rcl}
\dfrac{1}{2} \times \dfrac{4
… Read $\begin{array}{rcl}
\dfrac{1}{2} \times \dfrac{4
2011-II-19
Ans: D
Since $ABCD$ is a parallelogram, then $AB=CD$.
… Read Since $ABCD$ is a parallelogram, then $AB=CD$.
It is g
2011-II-20
Ans: D
Note that $x+y+z=180^\circ$ and $x+y=90^\circ$. Th
… Read Note that $x+y+z=180^\circ$ and $x+y=90^\circ$. Th
2011-II-21
Ans: D
Let $r$ be the length of the hypotenuse.
… Read Let $r$ be the length of the hypotenuse.
By Pythagorus
2011-II-22
Ans: C
In $\Delta ABD$,
… Read In $\Delta ABD$,
$\begin{array}{rcl}
\sin 40^\circ
2011-II-23
Ans: B
In $\Delta ACD$,
… Read In $\Delta ACD$,
$\begin{array}{rcl}
\because AD &#
2011-II-24
Ans: C
Note that the projection of $EB$ on the plane $ABCD$ is
… Read Note that the projection of $EB$ on the plane $ABCD$ is
2011-II-25
Ans: A
A is the image rotating the given figure anticlockwis
… Read A is the image rotating the given figure anticlockwis
2011-II-26
Ans: A
The 2 axes of reflectional symmetry are shown in the fo
… Read The 2 axes of reflectional symmetry are shown in the fo
2011-II-27
Ans: C
In $\Delta CDE$, since $CE=DE$, we have
… Read In $\Delta CDE$, since $CE=DE$, we have
$\begin{arra
2011-II-28
Ans: C
Note that the sum of all exterior angles of a regular $n
… Read Note that the sum of all exterior angles of a regular $n