1991-11-30 — Page 28

十八國民中

育執日五廿月十年未辛曆夏

1年明

會工職

商滿不

Aa G

會聯冠九二年薪酬調整

(#5) [42EH!

·香港中華廠聯合會與及香 華總商會、香港總商會、

※小組」曾於十一月八日

到本港四大福音,香港中

樓

廣告!

字卅四個

十元

每天收臂二十元,刊宇如趙 小字卅四個)定爲一個位,

-SWATHI-RES |

本分告数迎界

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1992 中學會考預習專欄

明德出版社 MILL & DALE PRESS

Computer (8)

8. (1) and (2) only

報日僑箠

c. (2) and (3) only

D. (3) and (4) only

E. (1), (2), (3) and (4)

5. Which of the following BASIC numbers is written correctly?

(1) 2.000

(2) 1.129E + 47

(3) 9.18E - 0.3.

(4) 0.33333

A. (1), only

B. (4) only:

C. (2) and (3) only

D. (1) and (4) only

E. (2), (3) and (4) only

6. The correct BASIC expression of

4ac

15

2a

K. CHOY

A. -B+SQRT(BA2-4*AC)/(2*A) B. -B+SQRT(BA2-4*A*C)/(2*A)

C. -8+(BA2-4*A*C}^{1/2}/2/A

BASIC is a short for Beginner's All-purpose Symbolic Instruction Code. It is a simple language for teaching programming to students. without a scientific background. A large number of versions of BASIC have been written. They are different slightly from the rest.. However, the most significant difference is the file handling commands. Most other commands are similar.

Multiple Choice questions in BASIC:

1. Arrange the following arithmetic operations in priority:

(1) Multiplication or division

(2) Powers or roots

(3) Addition or subtraction

(4) Calculations in brackets..

A. (1), (3), (2), (4)

B. (2), (4), (4), (3)

G. (4), (2), (1), (3),

D. (3), (4), (2), (1)"

E. (1), (2), (3), (4))

In BASIC, the integers can be stored are in the range of

A. -32768 to 32768

B.-32767 to 32768

C -32768 to 32757

D. -1024 to 1023

E. 128 to 127

What will be the output of the following program segment?

10 A:10

20 B 20

30 PRINT AB.

·D. (~8+(BA2-4*A*C)A(0.5))/2/A

E. (-B+(BA2-4*A*C)a(1/2)/(2*A)

The correct BASIC statement of the following equation y = 2.

A. LET Y2(A/B)(1/3)

is

B. Y= 2*(A/B)*(1/3)

C. LET Y = 2*(A/B)^3.

D. LET Y 2*3*(A/B)

E. LET Y 2 (A/B)A(1/3)

六期星日十三月一十(一九九一)年十八國民華中( 28 )

Consider the following program segment for questions 12 and 13,

10

INPUT M

20

IF M > 10 THEN 50

30 LET N = 0.17*M+6.50

40 GOTO 60

50 LET N 0.17*10+0.08*(M-9)+6.50

60. PRINT N

70

END

12. What is the printed output when the above program. 15 executed

and the input value is 10?

A. 1,7

B. 6.67 C.8.2

D. 10.5 E. 16.3

13. What is the printed output if line 40 in the program is deleted?

The input value for M is still 10.

A. 6.5

B. 6.67

C. 8.2

D. 8.28

E. 16.3

14. After the execution of the program segment,

100 A$ 1+2+3

110. PRINT A$

the printed output will be

A. 6

B. 123.

*G. 1+2+3

D.. "6"

E.

lg what will be the computer output of the statement PRINT PI in 15"+"2"+3"

finmediate mode of execution? (PI is not defined before.).

A. 0

8.3.1416

C. 3.141592654

D. 22/7

E. PI

9. What will be printed when the following program segment

executed?

A. 4

10 A% = 4,167

20. PRINT AK

:30 END

B. 4:1

C. 4.2

D. 4.16

E 4.167

10. Which of the following is equal to

A. ABS(-1)

B. INT(-1.9)

-C. RND(-1)

D. SGN(-9.8):

程由九聯

五高港

幼師

稚園聘全日

經驗者速具

近照及電話

玫號:

A. 10

B. 1020

C. 200

D. 20

E.. 0

Which of the following is/are valid variable names?

(1) COMPUT

(2) TEST

(3) 40

(4) CS*AD

A. (1) only

E. SIN(-1)

11. Trace the following program segment and hence find the output if

the input value is 10..

10 INPUT "THE TEMPERATURE DEGREES CENTIGRADE": C -200C9/5-*

30 x = J

40 PRINT THE TEMPERATURE INDEGREES FAHRE

A. THE TEMPEDURE IN DEGREES FAHRENHEIT 150

8. THE TEMPERATURE IN DEGREES FAHRENHEIT IS

THE TEMPERATURE. IN DEGREES FAHRENHEIT IS 42. THE TEMPERATURE IN DEGREES FAHRENHEIT IS 50. THE TEMPERATURE IN DEGREES FAHRENHEIT IS 62.

6. A cel

is add

der is doubled, then 7 square roots of

W / 12

-

the res

1992 中學會考預習專欄

明德出版社

MILE & DALE PRESS

Mathematics (8)

nd the number.

7. If the quare root OF TWICE 3 certain number is subtracted from the number and the result is 12, find the number:"

8. If the square root of twice a number is auter to 12, the result 15 equal

to the number find the number

•

- √2

(Ans.).

3. (a) = 3/2

·

9. There two

which is 26

W. K. Lo

numbers, the sum of After subtracting 2 from the aber number, it is equal

5/2

社★

Exercise 8 Rational

numbers irrational equations.

and

宝姻綠?

委託人多的優拆一定

Section A

当的對驵簸迎查詢

87数百利中心ATE 投帶外數表會

1.

of the following. BASIC statements have the same effect?

(1) 100 IF AB THEN GOTO 150

(2) 100 IF AB GOTO 150

(3) 100 IF A B THEN 150 (4)100 AB

110 GOTO 150

A. (1) and (2) only

B. (1) and (3) only

D. (3) and (4) only

C. (2) and (3) only

E. (1), (2) and (3) only.

16.

Answers:

1. (C) hierachy of arithmetic operations.

2. (C)-2 = 65536

32768 0..... 32767

3. (E) A is defined, B is defined. But AB is undefined.

4.

(B) (3) is invalid because it starts with a number.

5.

(4) is invalid because it contains a special character. (B) (2) exponent is too large.

6. (0)

7. (E)

.8.

(3) no decimal point for exponent.

(A) P is a variable only. It does not mean ye

9. (A)

10. (D) The argument of SGN 15 negative. 11. (D)

(0-1010 is false.

Concatenation of characters

Section B

5. x + 11+ 2x

Jx + 11 = 8

Squaring both sides

when x 18

36-18-6-12-R.5.

18

-{Ans.)

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請於

○化以

至晚 西學下半

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經檢機室,設 歡迎參觀。装

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Simplify

the following expressions

(a) 6/28 - 17/7 + 7/63.

(b) 18a ba8b-b505

Simplify the following expressions

(a) / 180

√5

(b)

+

-

3. Rationalize the following:

(a)

5

to the "Square root of 3 times the farger nugger. Find the smaller

number.

Solutions

Section A

3+ √2

···X + 1·1 = 64

(Ans.)

3 +

32 - (√2)4 37L

(Ans.)

..32/x-3x+49 Squaring both sides 1024(x-1)= -9x2-730x+3425

(x-5)(9x-

LIBRA

KONG PUBLIC.

1. (á) 6/28 - 1757 + 7/53.

(6)(2)(7) 17/7 + 7(3)7 12/7 - 17/7 +2137.

16/7

(b) Tab a/Bab- b/50a3b

(ab)Bab - (ab)/8ab

17. - £5

(Ans.)

4√3 + 3/2 *4/3 + 3/2

(Ans.)

5/2 7/3 + 6/2

+

(4/3)*

41/6 + 30

(3/2)2

(Ans.)

(ab)/50ab 3ab2ab2ab/Zab- Sab/2ab

-4ab/2ab -4/2(ab)/ab

2. (a) 80-7

-[4-/3) -

(Ans.)

+ $9

114 +41/6

· · 3,√5(3 - √5) + 5/5(3 + √5) (3 + √5)(3 - √5)

3/5

5/5

4. (a)

3- √5

4.√5

店

부

3/5

9/5 – 15 + 15/5 + 25

花戲院側,電

(c) 17+ B

7J3 + 5/2

4. Simplify the following

(a) 3/5 + 515 15

2√3

(6) 1/2-13(13+/67

Section D

5. Solve the equation

Jx FTT + 2£x - T = 8

(6) / - / + A

- A - Z 4 A

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ར རྣ ཌཱ ཀྵུ རྨཱ ནྱཱ སྐྱུརྩ རྨལྦུ

442

奇手慎斟上言自克馬

eckin when x - 5

5 or x =,75

·√5+11 + 2/5-T = 9

R.S.

(Ans.)

when, x = 75

L.S. = √75+11 + 2/75-1 # 8

* x 75 is rejected.

6. Let the number be x

√2x + (x + 7) = 4 √3x + 7 = 4 Squaring both sides 3x + 7 = 16

X 3

7. Let x be the number

X - JZX = 12

x - 12 = J2X

Squaring both sides

x2 - 24x + 144 = 2x

x2 - 26x + 144 = 0

(x - 18)(x ~0) 0

{Ans.)

8. Let x be the required number

2x + 12 2x

√2x = 2x Squaring both sides

12.

2x 4x2

48x + 144

2x 25+ 720

- 9)(x)

2 or x.

Checking: when x =

8

L.S. = √9 + 12 = 15 / R.S.

is rejected.

L.S.= √16+12=16=2(9)÷R.S..

when x 8-

{Ans.)

9. Let the small number be x

the larger number is (201

x 2 = √3(20 - x)

Squaring both sides

x2 - 4x + 4 = 3(20 - x)

x2 - x - 56 = 0

(x. 7)(x 8) = -0

X-7

x = 8

Checking: when x = -7

597"

1.5. = (-7) 2 = -9 R.S.

.'. x = -7 is rejected.

9 - 4

10 + 24/5

(Ans.)

[Ans.)

when x = 8

.*. x. = 8 or x = 18

L.S.

8 26

253

2/3

(b)

(√2−1)(√3)(1+/2)

Checking: when.x = 8

R.S.

√3120" = "8)" = 6

L.S. (B) 16 = 4 R.S.

L.S. R.S.

7/2-1/2+1

.'. x 8 is rejected.

X = 8

(Ans.)

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