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1. A supermarket has a policy of marking up the cost prices of their goods by  percent. Calculate the cost price of a toothbrush that was sold for . Round your answer to the nearest cent.

2. A game console has a sale price of  after a discount of  percent was applied. What was the original marked price of the console? 

Most smartphones use operating systems developed by _______.

a) Apple and Microsoft
b) Microsoft and Google
c) Symbian and Apple
d) Google and Apple

what application is used to navigate the internet

a.) domain

b.) operating system

c.) browser

d.) search engine

a(n) ________ enables the computer to drive the speaker system.

the ________ of the operating system enables users to communicate with the computer system.

1. Onsite
2. Offsite
3. Work station
4. Network

which of the following best describes an IP address class:

1. The class is the version of IP addressing standard used by the address.
2. The class defines the type of device that the address is assigned to (i.e. server, printer, workstation).
3. The class refers to the range of IP addresses that a DHCP server has been authorized to sign.
4. The class defines the default network address portion of the IP address.

Which of the following is used to uniquely identify a computer on a network?

1. Network ID
2. ARP Address
3. IP Address
4. Serial Number

A computer used as a component of a larger system is called:

1. An embedded system.
2. A mainframe computer.
3. A network.
4. An operating system.
5. A personal computer

Q.1. Which is the part of the computer system that one can physically touch?

(A) data

(B) operating systems

(C) hardware

(D) software

Windows 95, Windows 98, and Windows NT are known as what?

(A) processors

(B) modems

(C) operating systems

(D) domain names

A menu driven operating system is one which allows you to pick up from the menu of choices it displays on the screen. What is the name given to the images which are used in such image oriented menus?

(A) Figure

(B) Symbol

(C) Option

(D) Icon

An equilateral triangle has two vertices at (0, 0) and (0, 8). What are the possible coordinates of the third vertex? Illustrate and explain your reasoning.

Three vertices of a parallelogram are given. Find the coordinates of the fourth vertex.  

What is the use of JOINS in SQL?

What is the use of BETWEEN in SQL?

choose the SQL injection statement example below that could be used to find specific users:

1. 1' OR emp_name LIKE '%john%'
2. emp_name like '%john%'
3. 1' OR emp_name = '%john%'
4. None of these

What is SQL basics?

Discuss regular expressions in SQL with an example. 

English grammar topic need and answer asap

Rewright the topic sentences to give a concise specific topic and a specific impression about the topic.

h3po4 na3po4

What is the formulae of washing soda ?

What is the SI unit of mass in science?

Write a Python function find_duplicates(items1, items2) which takes
two lists of values as argument and returns a list containing all values which
were present in both lists.
The function must work both for lists of strings and list of integers.

Write a Python function to find the maximum of three numbers.

which of the following statements about algorithms is false?

18) Sum, Average, and Count are examples of ________.

A. categorical statistics

B. reporting criteria

C. summary calculations

D. summary statistics

which of the following is used in sql to begin a query?

a. begin

b. select

c input

d. insert

Mention the query in SQL to delete a record and a table.

Choose the database object that represents attributes in a SQL table:

1. Row

2. Column

3. Both

4. Query

Write the syntax of the query in SQL to add a primary key constraint in a table.

A loop is used to execute the same block of code multiple times. Each time the loop repeats is called an iteration of the loop.

The following loop repeats four times, one iteration for each letter in the word "word":

word = "word"
for letter in word:
 print(letter)

Output: w o r d

We can use any variable name instead of "letter" and perform any action inside the loop. All statements indented after the for loop statement will repeat four times. For example:

x = 1
for letter in word:
 print(x)
 x += 2

Output: 1 3 5 7

We can also iterate through each item in a list:

colors = ["red", "blue", "green"]
for x in colors:
 print(x)

Output: red blue green

We can also use a list of integers:

count = [1, 2, 3, 4, 5]
for i in count:
 print(str(i) + " squared equals " + str(i**2))

Output: 1 squared equals 1
2 squared equals 4
3 squared equals 9
4 squared equals 16
5 squared equals 25

Most for loops use the range function for a simple counter. Range returns a list of integers. Here's an example:

for x in range(2, 9, 3):
 print(x)

Output: 2 5 8

The first value is the "from" value, which is inclusive and defaults to 0 if not provided. The second value is the "to" value, which is not inclusive. The third value is the "step" value, which defaults to 1 if not provided. Here are some examples:

• range(2) returns 0 1
• range(0, 2) returns 0 1
• range(0, 2, 1) returns 0 1
• range(0, 6, 1) returns 0 1 2 3 4 5
• range(5, 9, 1) returns 5 6 7 8
• range(5, 9, 2) returns 5 7
• range(3, 0, -1) returns 3 

Answer please

1. 'OS' computer abbreviation usually means?

(A) Order of Significance

(B) Open Software

(C) Operating System

(D) Optical Sensor

2. '.MOV' extension refers usually to what kind of file?

(A) Image file

(B) Animation/movie file

(C) Audio file

(D) MS Office document

a(n) ________ device facilitates file sharing and data backup.

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