2020-II-27
Ans: C
I is true. Rewrite the equation of $C_1$, then the equa
… Read I is true. Rewrite the equation of $C_1$, then the equa
HKDSE-MATH - 2020 - Paper 2 -
2020-II-28
Ans: B
Note that the sample space is
… Read Note that the sample space is
$\begin{array}{|c|c|c
2020-II-29
Ans: A
Note that there are $28$ students in the distribution
… Read Note that there are $28$ students in the distribution
2020-II-30
Ans: A
Since the range is $9$, then we have $3 \le m, n \le 9$.
… Read Since the range is $9$, then we have $3 \le m, n \le 9$.
I m
2020-II-31
Ans: B
$\begin{array}{cl}
& \text{B}\ 000\ 000 \ 000\
… Read $\begin{array}{cl}
& \text{B}\ 000\ 000 \ 000\
2020-II-32
Ans: B
$\begin{array}{rcl}
(\log_\pi x)^2 -10\log_\pi x +
… Read $\begin{array}{rcl}
(\log_\pi x)^2 -10\log_\pi x +
2020-II-33
Ans: D
I is true. The graph of $y=a^x$ for $a < 1$ is
… Read I is true. The graph of $y=a^x$ for $a < 1$ is
II is true. The gra
2020-II-34
Ans: C
By the intercepts form, the equation of the straight l
… Read By the intercepts form, the equation of the straight l
2020-II-35
Ans: D
I is an arithmetic sequence.
… Read I is an arithmetic sequence.
$\begin{array}{cl}
�
2020-II-36
Ans: C
Sketch the system of inequalities as follow.
… Read Sketch the system of inequalities as follow.
Sub. $x=
2020-II-37
Ans: C
$\begin{array}{cl}
& z_1 \\
= & \dfrac{2+
… Read $\begin{array}{cl}
& z_1 \\
= & \dfrac{2+
2020-II-38
Ans: A
By applying Pythagoras Theorem to $\Delta ABP$, we ha
… Read By applying Pythagoras Theorem to $\Delta ABP$, we ha
2020-II-39
Ans: A
Add a point $F$ on the circle $CDE$. Join $DF$ and $EF$.
… Read Add a point $F$ on the circle $CDE$. Join $DF$ and $EF$.
2020-II-40
Ans: D
Sketch a graph according to the question.
… Read Sketch a graph according to the question.
Note that $4
2020-II-41
Ans: D
$\left\{\begin{array}{ll}
x^2 + y^2 -6x + cy -7 =0 �
… Read $\left\{\begin{array}{ll}
x^2 + y^2 -6x + cy -7 =0 �
2020-II-42
Ans: A
The required queue
… Read The required queue
$\begin{array}{cl}
= & 5! \t
2020-II-43
Ans: B
The required probability
… Read The required probability
$\begin{array}{cl}
=
2020-II-44
Ans: A
Let $x$ and $y$ be the two test scores, where $xy$. Let $
… Read Let $x$ and $y$ be the two test scores, where $xy$. Let $
2020-II-45
Ans: C
The mean of the six numbers
… Read The mean of the six numbers
$\begin{array}{cl}
=
2020-M1-01
Ans: (a) $1-4x+6x^2-4x^3+x^4$ (b) $\dfrac{1}{2}$
… Read - By the b