NECO BECE COMPUTER STUDIES 2024

Question 1:
Which of the following is an ICT based gadget?

A. Blender
B. Compact disk
C. Slide rule
D. Smartphone
E. Transistor

Answer: D (Smartphone)

A smartphone is an ICT gadget used for communication, internet access, and computing functions.

Question 2:
Computers can be classified based on the following except _______

A. Generation
B. Purpose
C. Shape
D. Size
E. Type

Answer: C (Shape)

Computers are classified by generation, purpose, size, and type—not by shape.

Question 3:
The interface that connects external devices to a system unit is _______

A. Bracket
B. Circuit
C. Port
D. Slot
E. Socket

Answer: C (Port)

A port is a physical interface used to connect external devices to a computer system.

Question 4:
A set of data stored in a table in database is _______

A. Character
B. Field
C. File
D. Key
E. Record

Answer: E (Record)

A record is a collection of related fields stored together as a row in a database table.

Question 5:
Which of the following storage devices is very slow in operation?

A. Cache
B. Flash drive
C. Floppy disk
D. Hard disk
E. Register

Answer: C (Floppy disk)

Floppy disks are among the slowest storage devices compared to modern storage media.

Question 6:
Monitor is used to display _______ copy of a document.

A. Hard
B. Printed
C. Selected
D. Soft
E. Zipped

Answer: D (Soft)

A monitor displays a soft copy, which is an electronic version of a document.

Question 7:
A modern method of information transmission is by _______

A. Beating drum
B. Letter writing
C. Satellite
D. Town crying
E. Whistling

Answer: C (Satellite)

Satellite communication is a modern and fast method of transmitting information globally.

Question 8:
Which of the following is a temporary storage location?

A. Flash drive
B. Hard disk
C. Optical disc
D. Random Access Memory
E. Read Only Memory

Answer: D (RAM)

RAM is temporary storage that holds data only while the system is running.

Question 9:
The position indicator on a computer screen is _______

A. Arrow
B. Bar
C. Cursor
D. Icon
E. Logo

Answer: C (Cursor)

The cursor shows where text will appear.

Question 10:
Safest way to open unknown email attachment?

A. Confirm first
B. Scan
C. Forward
D. Delete
E. Open directly

Answer: D

Best practice is to delete unknown attachments to avoid malware.

Question 11:
The abbreviation PDA stands for _______

A. Personal Digital Assistance
B. Personal Digital Assistant
C. Personnel Digital Administrator
D. Program Device Application
E. Program Digital Asset

Answer: B (Personal Digital Assistant)

PDA stands for Personal Digital Assistant, a handheld device for personal organization and computing tasks.

Question 12:
Which of the following is a logical operator in BASIC?

A. +
B. –
C. /
D. *
E. <

Answer: E (<)

The symbol < is used as a relational (logical) operator for comparison.

Question 13:
BASIC falls under which category?

A. Assembly
B. High level
C. Low level
D. Machine
E. Object oriented

Answer: B (High level)

BASIC is a high-level programming language designed to be easy to use.

Question 14:
The first machine run by a program is _______

A. Babbage’s Difference Engine
B. Burroughs’ Machine
C. ENIAC
D. Jacquard’s Loom
E. UNIVAC

Answer: D (Jacquard’s Loom)

It used punched cards, making it the first programmable machine.

Question 15:
Function key for “Save As” in MS Word?

A. F12
B. F10
C. F8
D. F4
E. F1

Answer: A (F12)

F12 opens the “Save As” dialog box in Microsoft Word.

Question 16:
To save a file with a new name, _______

A. Click “Save As” on the file menu
B. Toolbar Save As
C. Click “Save”
D. Save icon
E. Ctrl + S

Answer: A

“Save As” allows saving with a different name or location.

Question 17:
Shortcut for printing?

A. Ctrl + A
B. Ctrl + B
C. Ctrl + P

Answer: C (Ctrl + P)

Ctrl + P is the universal print shortcut.

Question 18:
Fourth generation computers used _______

A. Capacitor
B. Chip
C. Punch card
D. Transistor
E. Vacuum tube

Answer: B (Chip)

Microprocessor chips define fourth generation computers.

Question 19:
___ bits equals one word

A. 8
B. 4
C. 16
D. 64
E. 32

Answer: C (16)

Typically, one word equals 16 bits.

Question 20:
Convert 271 to binary

A. 10000111₂
B. 100001111₂
C. 100110111₂
D. 1000001111₂
E. 11000111111₂

Answer: B (100001111₂)

271 in decimal equals 100001111 in binary.

Question 21:
Which component determines the speed of a computer system?

A. Hard disk
B. Motherboard
C. Operating system
D. Random Access Memory
E. Read Only Memory

Answer: D (RAM)

RAM affects speed because it controls how quickly data is accessed.

Question 22:
A typical computer hardware is made up of ___ units.

A. Arithmetic and central processing
B. Central processing and control
C. Control and processing
D. Peripheral and control
E. System and peripheral

Answer: E

Hardware consists of system unit and peripheral devices.

Question 23:
Correct order of computer operation?

A. Input → Output → Process → Storage
B. Input → Process → Output → Storage
C. Output → Storage → Process → Input
D. Process → Output → Storage → Input
E. Storage → Input → Process → Output

Answer: B

Correct cycle: Input → Process → Output → Storage.

Question 24:
Device that converts analogue ↔ digital signals?

A. Analyzer
B. Bluetooth
C. Compiler
D. Infrared
E. Modem

Answer: E (Modem)

A modem converts signals for communication.

Question 25:
Optical ___ Reader detects pencil marks

A. Magnetic
B. Mark
C. Modern
D. Monitor
E. Mouse

Answer: B (Mark)

OMR detects shaded marks on paper.

Question 26:
Program designed to harm computers?

A. Antivirus
B. Compiler
C. Google Chrome
D. Malware
E. Mozilla Firefox

Answer: D (Malware)

Malware is harmful software.

Question 27:
Excel formulas begin with ___

A. =
B. +
C. *
D. **
E. <>

Answer: A (=)

All Excel formulas start with =

Question 28:
____ intelligence simulates human thinking

A. Artificial
B. Nanotechnology
C. Natural
D. Scientific
E. Simulation

Answer: A (Artificial)

AI mimics human intelligence.

Question 29:
Who analyses systems and recommends software?

A. Computer engineer
B. Operator
C. Database admin
D. Developer
E. System analyst

Answer: E

A system analyst evaluates needs and solutions.

Question 30:
1024 bytes equals ___ KB

A. 0.124
B. 1.024
C. 1.240
D. 10.240
E. 102.400

Answer: B (1.024 KB)

1 KB = 1024 bytes.

PRACTICAL: COMING SOON

Answer: Paris

ERC BECE MATHEMATICS 2024

 ERC MATHEMATICS 2024:

Instruction: Answer all the questions in this section.

1.       What is the place value of 5 in the figure 2567894013? A. Five hundred thousand   B. five million  C. fifty million   D. Five hundred million

2.       Write 411 in roman numerals  A. CDXI  B. CDII   C. CXV  D. CDIX

3.       What is the greatest common factor of 42, 70 and 98?   A. 2  B. 4  C. 7  D. 14

4.       Identify the prime factor of 60  A. 3 and 5   B. 2, 3 and 5  C. 2 and 3  D. 1 and 2

5.       Express 360 as a product of its prime factor   A. 2³ x 3² x 5   B. 2² x 3³ x 5²  C.  2³ x 3² x 5²   D. 2⁴ x 3³ x 5

6.       Write 0.00682 in standard form  A. 6.82 x 10^-4  B. 6.82 x 10^-3  C. 6.82 x 10^-2   D. 6.82 x 10^-4    

7.       What is the H.C.F of 4m²n² and 8m²n²  A. 4mn  B. 4m²n²   C. 8 m²n²  D. 80mn

8.       Find the H.C.F of 54, 36 and 72  A. 18  B. 16  C. 12  D. 8

9.       Find the smallest number that can be completely divisible by 12, 15 and 25  A. 120  B. 150  C. 180  D. 300

10.   What is the least number that must multiply 84 to give a perfect square?  A. 2  B. 17  C. 21  D. 33

11.   Find the LCM of 12, 18 and 32   A. 288  B. 298   C. 299  D. 388

12.   Express 32 thousandths as a decimal number  A. 0.032  B. 0.0032  C. 0.00032   D. 32000

13.   \(\text{Find the square root of } 3\frac{6}{25}\ \ \text{A. } 1\frac{4}{5}\ \ \text{B. } 1\frac{3}{5}\ \ \text{C. } 1\frac{2}{5}\ \ \text{D. } 1\frac{1}{5}\)

14.   Simplify \(1\frac{3}{4} - \left(2\frac{1}{3} + 4\right)\ \ \text{A. } 2\frac{3}{4}\ \ \text{B. } 1\frac{3}{4}\ \ \text{C. } -2\frac{3}{4}\ \ \text{D. } -3\frac{3}{4}\)

15.   Which of the following fraction is equivalent to\(\frac{3}{5}?\ \ \text{A. } \frac{9}{27}\ \ \text{B. } \frac{12}{20}\ \ \text{C. } \frac{8}{16}\ \ \text{D. } \frac{4}{18}\)

16.   Express 0.03076 to three (3) significant figures   A. 0.030   B. 0.0307  C. 0.0308   D. 0.03078

17.   Change 91.3% to a decimal fraction    A. 0.913   B. 91.3  C. 913.0   D. 9130

18.   The  following graph represent   A. x ˂ 2  B x ≤ 2   C. x ≥ 2    D. x > 2

19.   Find the range of values of x which satisfies the inequality \(\frac{1}{2}x\)  + 5 ≤ 3  A. x ≤ - 4   B. x ≤ -1  C. x ≥ -1   D. x ≥ -4

20.   \(\text{Simplify } \frac{\sqrt{45}}{125}\ \ \text{A. } \frac{9}{25}\ \ \text{B. } \frac{3}{5}\ \ \text{C. } \frac{3}{4}\ \ \text{D. } \frac{4}{5}\)

21.   Express 0.000095 in standard form.   A. 9.5 x 10^-6   B. 9.5 x 10^-5   C. 9.5 x 10⁶     D. 9.5 x 10⁵

22.      If m = 2, n = 5 and y = 3, evaluate  \(\frac{m(n+y)}{nm}\)   A. 16.0   B. 1.6    C. 0.16   D. 0.016

23.   Which of the following numbers is non-rational A. √10   B. √64  C. 3/5   D. 0.02

24.   Evaluate 1101_two x  101_two A. 100001_two  B. 110001_two  C. 1000001_two   D. 1010011_two

25.   What is the bill of a house that consume 1000 units of electricity, if the first 100 units are charged at ₦10.00 per unit and the remaining unit at ₦5.00 per unit  A. ₦4500.00   B. ₦5000.00  C. ₦5500.00  D. ₦6000.00

26.   The ratio of sheep to goat on a farm is 5:8, if there are 50 sheep on the farm calculate the total number of livestock on the farm.  A. 130  B. 90  C. 80  D. 40

27.   A car travel for 500km on 50 litres of petrol. How many kilometers will it travel on 35 litres  A. 75km  B. 85km  C. 350km  D. 380km

28.   If it takes a driver 5 hours to drive a distance of 600km, calculate the average speed.  A. 100km/h   B. 120km/h   C. 150km/h  D. 180km/h

29.   A 50kg bag of rice is reduced by 15% find the quantity of the rice left  A. 42.5kg   B. 35kg  C. 29.5kg   D. 7.5kg

30.   Simplify 3a – 5(b – 2a) + 2b  A. a – 3b  B. a – 7b  C. 13a – 3b  D. 5a – 7b

31.   Factorize 24pq – 16p²  A. 8p(3q +2p)  B. 8p(3q – 2p)  C. 8(3pq + 2p)  D. 8(3pq – 2p²)

32.   Solve the following pair of simultaneous equation  2x – y = 5 and x – 2y = 4  A. x = - 2; y = -1   B. x = -2; y = 1   C. x = 2; y = 1  D. x = 2; y = - 1 

33.   An investor invested 200,000 in a company that pay 5% interest per annum. How much will he get after 3 years?  A. ₦230,000    B. ₦205,000   C. ₦170,000  D. ₦30,000

34.   R varies directly as S and inversely as T. if R = 8 when S = 4 and T = 3, then R is equal to _____ \(\text{A. } \frac{3T}{2S}\ \ \text{B. } \frac{3S}{3T}\ \ \text{C. } \frac{6S}{T}\ \ \text{D. } \frac{6T}{S}\)

35.   If the area of a square tile is 4cm². How many tiles is needed to cover a floor measuring 12m by 8m?  A. 600 tiles B. 2400 tiles  C. 28000  D. 3840 tiles

36.   Find the circumference of a circle whose diameter is 21cm.\(\pi = \frac{22}{7}\)  A. 22cm  B. 32cm  C. 33cm   D. 66cm 

37.   Find the perimeter of the triangle below.  A. 3cm  B. 4cm  C. 6cm  D. 12cm

38.   Calculate the area of the trapezium below   A.  720cm²   B. 360 cm²   C. 256 cm²  D. 180 cm² 

39.   (i) A rhombus has two (2) lines of symmetry  (ii) A kite has two (2) lines of symmetry (iii) A decagon has nine (9) sides  (iv) A sphere has four (4) angles.  Which of the above statement is correct  A. i    B. i, ii and iii    C. ii and iv   D. ii

40.   Which of the following shapes has equal sides?  A. Triangle  B. Kite   C. Rhombus  D. Hexagon

41.   The scale factor of two similar portraits is 2:5, if the area of the smaller portrait is 120cm². Calculate the area of the larger portrait.   A. 750cm²  B. 300 cm²   C. 60 cm²   D. 48 cm²

42.   A polygon with 8 sides is called _____  A. hexagon  B. octagon   C. pentagon  D. nonagon 

43.   ________ is the formula for calculating sum of interior angles of a polygon  A. (2n + 2)180°   B. (2n – 2) 180°   C. (n + 2) 180°   D. (n – 2) 180°

44.   How many vertices have cuboids?  A. 8  B. 12  C. 13  D. 14

45.   Find the value of x in the diagram below   A. 1.   B. 2   C. 3  D. 4

46.   The value of the angle marked θ in the diagram below is _____   A. 80°  B. 180°   C. 240°  D. 270°

47.   Find the value of θ in the diagram below.   A. 40°   B. 60°  C. 70°   D. 180°

48.   Complete the following set of Pythagorean tripe 5, 12, _____   A. 19  B. 16   C. 14  D. 13

49.   Which of the following angles can be constructed using a pair of compass and ruler only?  A. 85°  B. 95°  C. 105°  D.  117°

50.   What is the reciprocal \(\text{of } \frac{1}{2}r\ \ \text{A. } \frac{2}{r}\)  B. 2r   C. 1   D. -2

51.   If the bearing of A from B is 150°, what is the bearing of B from A?   A. 360°   B. 330°   C. 240°  D. 180°

52.   If P varies as Q and K is constant then the formula connecting P and Q is ______  A. P = KQ   B. P = K + Q   C. P = Q/K    D. P = K/Q  

53.   If the mean of 12, 15, x, 13 and 17 is 16, find the value of x.  A. 23  B. 19   C. 18  D. 14

The table below is recorded of the favorite games of some students in school

Types of Games	wrestling	Lawn Tennis	Football	Table Tennis	Athlete
Number of Students	2	4	24	16	4

Use the information to answer questions 54 – 56

54.   What game was the most favorite for most students?  A. wrestling  B. Lawn tennis  C. Table tennis   D. Football  

55.   What is the least liked by the students?  A. Wrestling   B. Lawn tennis  C. Football  D. Table tennis 

56.   What is the probability that a student picked at random from the school liked Lawn tennis most? A. 0.08  B. 0.2  C. 0.48  D. 0.16

57.   There are 10 red pens and 25 blue pens in a pack of 50 pens. If the rest of the pens are black. Find the probability of picking a black pen from the pack  A. 3/10  B. 3/6   C. 2/5  D. 7/10

58.   The probability that it will rain in a particular month is 0.68. what is the probability that it will not rain.  A. 0.48  B. 0.42  C. 0.32  D. 0.30

59.   The mode of the numbers 3, 5, 10, 5, 4, 3, 5, 6 and 8 is _____    A. 3  B. 4  C. 5  D. 6

60.   Find the median of the following set of numbers 5, 6, 4, 2, 3, 2, 8, 4, and 5  A. 8   B. 6  C. 5  D. 4

 

SECTION B: ESSAY

Instruction: Answer all Questions Each. Each question carries 10 mark.

Note: calculators are not allowed

1a. use the triangle below to answer the following questions

(i). What is the sum of all its sides and simplify the resulting algebraic expression?  

(ii). Calculate the value of x if the perimeter of the triangle is 46cm.

(iii) Calculate the length of each side of the triangle

b. Solve X² + 7x + 10 = 0 

2a. the pie chart bellows the distribution of a man’s monthly income.

(i). What is the size of the angle represented by OTHERS?

(ii). If the man’s monthly income is ₦180,000. How much does he spend on transportation?

(ii). What percentage of his monthly income does he save. Correct your answers to two (2) significant figures

b. \(\frac{6\frac{3}{4}}{\left(21\frac{1}{3} \times 2\frac{1}{4} - 21\right)}\)

3a. solve the equation  \(\frac{2(2x + 1)}{3} = \frac{x - 3}{2}\)

(ii). Find the reciprocal of 0.004

b. solve the simultaneous equation  3x + 2y = 5 and  2x – 3y = -1

4a. using a pair of compass and a ruler only construct a triangle <ABC such that ABC = 60°, <BAC = 45° and /AB/ = 5.6cm. measure /BC/ and /AC/.

b. make J the subject of the formula in the equation  T = ½AJ² + trs.   

WAEC Data processing 2024

 

1. The Stepped Reckoner was developed by A. Gottfied Leibnitz. B. Herman Hollerith C. John Von Neumann  D. William Schickard
2. The binary number 100101 can be written in denary as
   A. 25  B. 37  C. 45  D. 211
3. The first stage in computer data processing procedure is
   A. collection of data  B. communication of information  C. conversion of data  D. manipulation of data
4. One advantage of electronic data processing is that it
   A. involves special skill  B. deals only with simple data  C. is completely error-free  D. handles complex data
5. The type of computer that has the ability of counting in discrete form is referred to as
   A. analogue computer  B. digital computer  C. hybrid computer  D. versatile computer
6. One reason for using Computer Aided Design in manufacturing is that
   A. it uses few system resources  B. manufacturing time is reduced  C. designers do not need training to use it  D. 3D designs are easily produced with it
7. Which one of the following statements is true about Voice Over IP? It
   A. converts voice and video data into a digital signal and transfers it over the Internet
   B. converts voice and video data into a digital signal and broadcasts it via a transmitter
   C. is a voice over communication system which is cyber-attack proof
   D. is a circuit-switched data communication system
8. Which one of the following sets of devices can be used to store data during processing?
   A. Cache, RAM and Register  B. Cache, Register and ROM  C. Flash Drive, ROM and Hard Disk Drive  D. RAM, Register and Zip Drive
9. The process of inspecting, transforming and modeling data to get useful information is known as
   A. collation  B. interpretation  C. execution  D. analysis
10. One disadvantage of using computer for information processing is
    A. need for staff retraining  B. increased running cost in the long run  C. the increase in storage space  D. redundancy of computers in the long run
11. The diagram in Figure 1 illustrates process called 
    
    A. information processing  B. information transmission  C. modulation  D. synchronization
12. The transmitter in communication is the component that
    A. decodes sender's signal by interpretation  B. encodes interpreted data by using machine language  C. broadcasts synchronous signals  D. launches signal into the air
13. Which of the following resources is not usually shared in a network?
    A. VGA projector  B. Laserjet printer  C. Folder  D. File
14. Factors to be considered when creating a backup system in a computer network include
    A. amount of RAM, amount of data and time of backup
    B. amount of RAM, type of data and frequency of backup
    C. media to use, amount of data and frequency of backup
    D. media to use, type of data and time of backup
15. The URL www.exams.edu.ng represents the website of
    A. an examination body  B. a Nigerian-based learning institution  C. an educational institution in Niger  D. a research institution in Niger
16. The Post Office Protocol (POP) is used to
    A. interconnect devices on the Internet  B. retrieve email from a mail server  C. transfer file from a server to a client  D. send email from one user to another
17. A user working on a computer that is running on Windows 7 issued the command Ctrl + Alt + Del while typing a document.
    What interface is expected to be displayed on the screen?
    A. Restart Windows  B. Shut Down Windows  C. Windows Security  D. Windows Task
18. Header and Footer are added to a document in MS Word by just clicking on the
    A. Edit menu  B. Format menu  C. Insert menu  D. View menu
19. A typist positioned the insertion point at the beginning of a line of text in a word processor and then pressed down the Shift key and clicked at the opposite end of the text. What would be the result of this action? The text will be
    A. copied into the clipboard  B. cut into the clipboard  C. deleted from the storage  D. highlighted on the screen
20. The Microsoft Excel menu bar icon shown in Figure 2 is used to
    
    
    
    A. automatically add up selected values  B. create label that spans multiple columns  C. spot trends and patterns in user's data using bars, columns and icons  D. organize data for easy analysis
21. To add a new column to the right of the IGR column on the interface in the figure above, the user would
    
    
    
    A. right-click on cell C1 and then click on insert  B. right-click on cell D1 and then click on insert  C. right-click on column C and then click on insert  D. right-click on column D and then click on insert
22. The function of the foreign key in a database is to
    A. uniquely identify tuples in a table  B. provide a link between data in two tables  C. uniquely identify an entity occurrence  D. uniquely identify each record in a table
    
    
    
23. How many primary keys exist in the figure above?
    A. 3  B. 4  C. 5  D. 12
    
    
    
24. Which of the following lists contains the primary keys in the figure above?
    A. Customers, Orders, and Products  B. CustomerId, OrderId, ProductId  C. CustomerId, FirstName, LastName and DateCreated  D. Customers, CustomerId, FirstName, LastName, and DateCreated
25. Web design packages include the following, except
    A. Macromedia Dreamweaver  B. iWeb  C. Front Page  D. Adobe PageMaker
    
    
    
26. The part labelled IV in the image above is used to
    A. shape objects  B. select and transform objects  C. draw lines and curves  D. create texts
27. One precautionary measure taken when cleaning a monitor is
    A. covering the monitor with antiglare  B. cleaning the monitor with alcohol  C. unplugging the power supply cable  D. using a vacuum cleaner to dust the monitor casing
28. Which one of the following practices is considered ethical?
    A. gaining access into school database to change one's grades
    B. gaining access into government database to alter personal details
    C. logging into a friend's social media account to read inbox messages
    D. signing into school e-library to read e-books
29. Proper network implementation and good ICT policies are types of
    A. adaptive measures  B. corrective measures  C. perfective measures  D. preventive measures
30. Preventive maintenance measures in the computer room include the following options except
    A. good ventilation  B. proper illumination  C. the use of rugs  D. the use of tiles
31. A database administrator is responsible for the following tasks except
    A. controlling and monitoring user access to the database
    B. enrolling users and maintaining system security
    C. maintaining archived data
    D. maintaining connection between the local network and the Internet
32.  Measures taken to avoid eye strain include the following except
    A. adjusting the brightness of the monitor
    B. adjusting the height of the screen
    C. blinking of eyes often
    D. relaxing the body regularly
33. A computer virus replicates itself into other programs or certain areas on the disk during the
    A. dormant phase  B. execution phase  C. propagation phase  D. trigger phase
34. A malware that copies and replicates itself using computer networks and security flaws is
    A. Rootkit virus  B. Spyware  C. Trojan horse  D. Worm
    
    
    
35. The entities in the figure above are named
    A. RegNo, Name and Age  B. Musa, Uche and Bayo  C. Student and Subject  D. Maths, Eng and DP
36. Which one of the following statements is true about database tables?
    A. All the tables in a database have a common name
    B. A table may contain repeating groups
    C. Entries in a column are from different domains based on datatype
    D. There are no duplicate rows in a table
37. The major difference between serial and sequential files is that sequential files are
    A. given a key  B. sorted in a particular order  C. stored as they come  D. recorded in any storage medium
38. Which one of the following pairs contains computer file classification?
    A. Master file and serial file  B. Random file and master file  C. Reference file and random file  D. Transaction file and master file
39. Which of the following statements supports the goals of data backup?
    I. Need for duplication  II. Need for future reference  III. Protection against data loss  A. I and II only  B. I and III only  C. II and III only  D. I, II and III
40. Which of the following characteristics is associated with the architecture of parallel database?
    A. Communication cost and problems cannot be ignored
    B. Machines can be far from each other
    C. Machines are physically close to each other
    D. It is usually associated with shared-nothing architecture

 

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