頁二第張六第日七初月三年申庚屦夏
1980
WAH KIU YAT PO
報日僑業
·期星
10% and the area remains unchanged then the
17
Which of the following
1067
中學會考試題預習專欄
is not a rational number?
width is decreased
A.7.9699
3.11%%
新數
(廿九)
(明德出版社魯榮家提供資料
911
MODERT MATEMATICS (29)
WAK. LO
of
(MILL & DALE PRESS LTD.)
-7-0
-14x+49=0
Revision Exercise
Paper II:
+49=0
and 7 are the roots
P. Los 1000,
6- 3.1416
R. tang
.116.
↑. |12 +13
18. F64
P. 281
101
21
3.0.9301
C. 2.9699
D. 2.0301
E. 1.0301
སྐ་།།།
26. 3*+3
Time Allowed: 11⁄2 hrs.
བ
+49=0
1. If —
then y
10. If xy-a and then (x-y)
then
11. (-2x-7)2=
If
(x+2) €+3
A. 2(x-by)?
3.4(x-ty) C: 4(x+y)?
28
where i
- {x: ax
If n(A)
P. b4ac7.0
b-4ac
b-4ac< 0
S. A = Ø
20. Which of the following
is an empty seb
2. {0}
x2+2x+8 =0
19
D. 4(x+ży
8. 19
E. 2(x+4y)?
R. (
12. (x-1)
S.
x=-x}
2
一段
S.
一廿月四年〇八九一层公年九十六國民華中有教倭都
The quadratic equation with roots 1+√3 and
-Bis
2x
2x
28. The figure shows the
graph
A
32. Which of the following-
statements is/are true
(1)tan(90°+8)
tane
(II) cos(-9) =cose
(III) sin20 29ine
A. (I) only
B. (II) only
(III) only
(I) and (11) only
5. All of them
33. If tex (0-45°)
A. 105
G. 150
E. 60
.7321.
75 58
Which, of the following
la correct in general?
A. sin20+cos20 = 1
B. sin(90+9) = cosə
C. sin se+cos te
D. ten450° 10°
E. sin20° sin50°-sin39°
singπ =
hich of
Incorrect
following is
E. None of those.
3. Which of the following
a factor of
81
P. ac O
x6tin x-481 -1-0-0x360°
7x
5. 670
36, The figure shows part
of the graph of
9-2p
2pq
(p-2q)
None of these.
5. The coefficient of
x'y in
then
(2x2-3xy+4y2)(4y2+3xy-5x2)
is
A. 6
0 211
E -15
6. If 8x+21Y=11 and
then
4x-9y=-11-
P. x=2, y=3
Q. x=-2, y=-3
R. x=-3, y=}
T
Which of the following statements is/are false
if 0 4x
(1)
(II) O (III) P. (1)
only
Q. (II) only
R. (III) only
S. (II) and (111) only
T. None of them.
8. If the length of rect- angle is increased by
E. 2(x2+
13. A manufacturer produc-
ed 900 transistors in
the first week, x in the
second week, 3x in the
third week and 600 în
the fourth week. If the
mean for the four weeks
was 825 transistors,
then x is
A. 206
B. 375
0.450
D. 750
E. 825
14. The monthly income of Mr. Ho is B. He spent
2/5 of his monthly income on rent and 1/4
of the remainder on
food. He was left with
Ix, then x= A. Nx
3. N
D. Nx
X
E. None of these.
15.√√3 +√3-13 √133
B.
E. None of these
16. a,b and c are non-zero
integers; if a+b+c =0,
then the value of
a(Z+ 1)+b(1 + 1) +0(1 + 2)
is
More #an
=[xıxlogi=0}, then
131
D. [1,0]
23. In a certain sity, 60%
of families own a car
and 40% own a house,
which of the following
statementa mújt, be
false?
A. All familijs own a
car or a huse
-
All house whers also
邮 own a car 95
C. More than lalf thes
car ownersal
house.
D. All car ow
own a hou
If the nu
oning ings
10%, some
must own
and a House)
and
denotes Jen is rich"
denote John 18 happy". The statement "It is not tue that if John is rch, then John is rich" is équilvalent lo
B. up → G
C. P
T. None of these
29. Which of the following
graphs represents
K&
30. If a 70, b20 and c>0
which of the following graphs represents
{(x,y) = a + by
樂
12008TT
xx
31. In the figure, AB - b, the sree of triangle
b2sin30°
3. b2ten30°
38
singe
singe
2sine
200se
cos29
In the figure,
the centre of the circle
Which of the following
a statement 8 is/are.
(1) AD (II) AB2
BD DO
BD.BC
(III) AC2= CD. CB
P. (I) only
Q. (II) only
R. (III) only
S. (II) and (III) only
T. All of them
39. In the figure. CD
P. 48/7
R.
42/8
S. 16
btan 500
2(sin50°-sin20°)
40. In the figure,
Qu
P. x
R. -2
180
S. -3
Ep.
R. 90
T. None of these
25. If logx 10.801, then
E. (tan50-tan20°)
S. 90