Worksheets0-50 проф
Total questions: 50
Worksheet time: 25mins
Name
Class
Date
1.
When 12 is divided by the positive integer k, the remainder is k-3. Which of the following number could be the value of k?
a)
10
b)
4
c)
6
d)
3
e)
9
2.
If the product xy is negative, which of the following unequality must be true?
a)
x<0
b)
y<0
c)
,
,
d)
.
.
e)
x + y < 0
3.
Which of the following number is the least positive integer that is divisible by each of the integers from 2 to 5, inclusive?
a)
120
b)
30
c)
60
d)
240
e)
180
4.
If x is positive integer, then x(x -1) is
a)
always odd
b)
divisible by 9 whenever x is odd
c)
odd only when x is odd
d)
always even
e)
divisible by 5 whenever is even
5.
Which of the following numbers has the greatest value?
a)
7,5
b)
-8,3
c)
2
d)
| 4,5 |
e)
| - 7,7 |
6.
Which of the following statements cannot result in an integer?
a)
An even integer divided by 7
b)
The quotient of two distinct prime numbers
c)
The product of two integers divided by the reciprocal of a different integer
d)
A multiple of 11 divided by 3
e)
The sum of two odd integers divided by 2
7.
After a performance review, Steve’s salary is increased by 5 percent. After a second performance review, Steve’s new salary is increased by 20 percent. This series of raises is equivalent to a single raise of
a)
30%
b)
25%
c)
27%
d)
26%
e)
32%
8.
a)
1) only
b)
2) only
c)
1) and 2)
d)
1) and 3)
e)
1), 2) and 3)
9.
Choose the correct mathematical term: “________ means to add.”
a)
Reciprocal
b)
Product
c)
Quotient
d)
A remainder
e)
Sum
10.
If positive integers q and r are both even, which of the following numbers must be odd?
a)
q - r
b)
qr - 1
c)
q ( r - 1 )
d)
,
e)
.
11.
a)
9
b)
3
c)
5
d)
7
e)
8
12.
a)
33
b)
54
c)
36
d)
24
e)
45
13.
In a group of 20 tourists, 12 brought cameras. If one-half of the tourists with cameras brought disposable cameras, what percent of all of the tourists brought disposable cameras?
a)
40%
b)
20%
c)
50%
d)
30%
e)
60%
14.
a)
'
b)
,
c)
;
d)
.
e)
:
15.
If the ratio of male students to female students in a philosophy class is 3:5, and there is a total of 40 students in the class, how many female students are in the class?
a)
24
b)
15
c)
16
d)
25
e)
8
16.
Alice is twice as old as Brian and Cathy is 6 years younger than Brian. If Alice is a years old, how old is Cathy in terms of a ?
a)
a + 6
b)
a - 6
c)
,
d)
.
e)
2a - 6
17.
If the current population of country Z is 200 000 people and the population grows by 3% every year, which of the following expresses the population of country Z in 5 years?
a)
200000 x (1,03)^5
b)
200000 x 5 x 1,03
c)
200000 x (0,03)^5
d)
200000 x (1,3)^5
e)
200000 x (1,05)^3
18.
a)
16
b)
-8
c)
-4
d)
8
e)
-16
19.
a)
m ^2 + m - 6 = 0
b)
m ^ 2 + 4m + 3 = 0
c)
m ^ 2 - 4m + 4 = 0
d)
m ^ 2 - 4 = 0
e)
m ^ 2 + 5m + 4 = 0
20.
a)
12
b)
2
c)
5
d)
6
e)
4
21.
The definition of operating system:
a)
The set of programs that jointly control the system resources and the processes using those resources on a computer;
b)
A system which connects up a number of computers and communications devices to enable messages and data to be passed between those devices;
c)
A program that runs without any terminal or user interaction;
d)
A type of network;
e)
A system which takes scanned images of documents and stories them on computer for access, rather than filing the paper copies of the documents.
22.
A visual symbol used in a menu to represent a file or program:
a)
stylus
b)
mouse
c)
icon
d)
pixel
e)
template
23.
The definition of pixel:
a)
individual dot on a computer screen
b)
electrical force
c)
surface on which pictures or data are shown
d)
network of lines crossing at right angles
e)
a register which stores and address in memory
24.
The definition of voltage
a)
individual dot on a computer screen
b)
electrical force
c)
surface on which pictures or data are shown
d)
network of lines crossing at right angles
e)
a register which stores and address in memory
25.
The definition of screen
a)
individual dot on a computer screen
b)
electrical force
c)
surface on which pictures or data are shown
d)
network of lines crossing at right angles
e)
a register which stores and address in memory
26.
The definition of grid
a)
individual dot on a computer screen
b)
electrical force
c)
surface on which pictures or data are shown
d)
network of lines crossing at right angles
e)
a register which stores and address in memory
27.
The definition of address register
a)
individual dot on a computer screen
b)
electrical force
c)
surface on which pictures or data are shown
d)
network of lines crossing at right angles
e)
a register which stores and address in memory
28.
What is Clipboard?
a)
portable board with a clip at the top for holding papers
b)
electrical force
c)
surface on which pictures or data are shown
d)
network of lines crossing at right angles
e)
a register which stores and address in memory
29.
The definition of stylus:
a)
a register which stores and address in memory
b)
electrical force
c)
surface on which pictures or data are shown
d)
portable board with a clip at the top for holding papers
e)
an electronic device that is used to draw or write on the screen
30.
The definition of the word Hacker
a)
An electronic device that is used to draw or write on the screen An electronic device that is used to draw or write on the screen
b)
Part of a computer program which tells the computer what to do at the stage
c)
Surface on which pictures or data are shown
d)
Pointed implement for drawing or writing
e)
A person who attempts to breach the security of a computer system by access from a remote point
31.
The term used to describe the equipment and software elements that allow us to access, retrieve, store, organize, manipulate and present information by electronic means
a)
Radio and TV networks
b)
Communication technology
c)
Information technology
d)
Computer-integrated manufacturing.
e)
Robotics technologies.
32.
The technology that we use to collect, process, protect and store information
a)
Information technology.
b)
Communication technology.
c)
Radio and TV networks.
d)
Computer-integrated manufacturing.
e)
Robotics technologies.
33.
Technologies that are part of ITCs
a)
Agriculture
b)
Geology
c)
Networks
d)
Fashion industry.
e)
Air industry.
34.
Communication between a human user and a computer system:
a)
Interface.
b)
Human-computer interaction (HCI).
c)
User interface (UI).
d)
Software interface.
e)
Hardware interface.
35.
In computer technology, there are several types of interfaces
a)
Networks.
b)
Human-computer interaction (HCI).
c)
Usability.
d)
Agriculture.
e)
Hardware interface.
36.
The languages and codes that the applications use to communicate with each other and with the hardware
a)
Software interface.
b)
Human-computer interaction (HCI).
c)
User interface (UI).
d)
Hardware interface.
e)
Usability.
37.
The wires, plugs and sockets that hardware devices use to communicate with each other
a)
Usability.
b)
Human-computer interaction (HCI).
c)
User interface (UI).
d)
Software interface.
e)
Hardware interface.
38.
The interface features through which users interact with the hardware and software of computers and other electronic devices
a)
Usability.
b)
Human-computer interaction (HCI).
c)
User interface (UI ).
d)
Software interface.
e)
Hardware interface.
39.
Term means making products and systems easier to use, and matching them more closely to user needs and requirements
a)
Hardware interface.
b)
Human-computer interaction (HCI).
c)
User interface (UI).
d)
Software interface.
e)
Usability UI.
40.
Usability is defined by concepts:
a)
Effectiveness.
b)
Ergonomics.
c)
Agriculture.
d)
Software interface.
e)
Hardware interface.
41.
Types of User interface
a)
Effectiveness interfaces.
b)
Command line interfaces.
c)
Ergonomics interfaces.
d)
Internet.
e)
Agriculture.
42.
Interfaces that to use pictures and graphics instead of just words to represent the input and output of a program
a)
Effectiveness.
b)
Command line interfaces.
c)
Text-based user interfaces.
d)
Internet.
e)
Graphical user interfaces.
43.
Select the characteristic of good interface:
a)
Ergonomics.
b)
Clarity.
c)
Internet.
d)
Familiarity.
e)
Agriculture.
44.
What are the different types of computers?
a)
desktop
b)
software
c)
phone
d)
hardware
e)
computer
45.
The part of a desktop computer is the….
a)
printer
b)
monitor
c)
computer case
d)
motherboard
e)
keyboard
46.
What is a computer case?
a)
It is one of the main ways to communicate with a computer. There are many different types of keyboards, but most are very similar and allow you to accomplish the same basic tasks.
b)
It is the metal and plastic box that contains the main components of the computer, including the motherboard, central processing unit (CPU), and power supply.
c)
It is another important tool for communicating with computers. Commonly known as a pointing device, it lets you point to objects on the screen, click on them, and move them.
d)
It has a ball that can rotate freely. Instead of moving the device like a mouse, you can roll the ball with your thumb to move the pointer.
e)
It uses an electronic eye to detect movement and is easier to clean.
47.
A(n) device is any hardware component that allows you to enter data and instruction into a computer.
a)
interaction
b)
input
c)
communications
d)
output
e)
terminal
48.
Which of the following groups consist of only input devices?
a)
Monitor
b)
Scanner
c)
Headphons
d)
Printer
e)
Keyboard
49.
What does DRAM stands for?
a)
Digital Random Access Memory
b)
Dynamic Random Access Memory
c)
Dividing Random Access Memory
d)
Dynamic Recording Access Memory
e)
Digital Recording Access Memory
50.
Which part of the computer is considered as Brain of the Computer?
a)
Random Access Memory
b)
Central Process Unit
c)
Read Only Memory
d)
Hard Disk
e)
Motherboard
100 %
