A relational database has been setup to track customer browsing activity for an online movie streaming service called SurfTheStream. Movies are identified by a unique code that consists of a four-character prefix and four-digit suffix. Additionally, each movie is assigned a content rating which must be one of the following options: "G", "PG", "M", "MA15+" or "R18+". The first time a customer previews a movie is captured by the database. Customers may preview a movie before they stream it, however, they cannot preview a movie after they have started to stream it. You may assume "Duration" refers to the time in seconds a customer has spent streaming a particular movie after the "Timestamp"." A simplified version of their database schema has been provided below including foreign key constraints. You should consult the provided blank database import file for further constraints which may be acting within the system. Relational Schema- Customer ſid, name, dob, bestfriend, subscriptionLevel] Customer.bestFriend references Customer.id Customer.subscriptionLevel references Subscription.level Movie (prefix, suffix, name, description, rating, release Date]" Previews [customer, moviePrefix, movie Suffix, timestamp] Previews.customer references Customer.id Previews.{moviePrefix, movieSuffix} reference Movie. {prefix, suffix}" Streams [customer, moviePrefix, movieSuffix, timestamp, duration] | Streams.customer reference Customer.id Streams.{moviePrefix, movie Suffix} reference Movie.(prefix, suffix}" Subscription [level] Task Explanation Question 32 Task : Return the number of movies which were released per rating category each day in 2021.
Explanation : This query should return a table with three columns, the first containing a date, the second containing a rating and the third containing the number of movies released in that rating group on that day. You do not need to days/rating combinations which had zero movies released. File name : c3.txt or c3.sql Maximum Number of Queries SQL Solution _____
Answers
To determine the number of movies released per rating category each day in 2021 based on the provided relational schema, a SQL query needs to be formulated.
The query should generate a table with three columns: date, rating, and the count of movies released in that rating group on that specific day. The result should exclude any combinations of dates and ratings with zero movies released. The SQL solution will be provided in a file named "c3.txt" or "c3.sql" and should consist of the necessary queries to retrieve the desired information.
To accomplish this task, the SQL query needs to join the Movie table with the appropriate conditions and apply grouping and counting functions. The following steps can be followed to construct the query:
Use a SELECT statement to specify the columns to be included in the result table.
Use the COUNT() function to calculate the number of movies released per rating category.
Apply the GROUP BY clause to group the results by date and rating.
Use the WHERE clause to filter the movies released in 2021.
Exclude any combinations of dates and ratings with zero movies released by using the HAVING clause.
Order the results by date and rating if desired.
Save the query in the "c3.txt" or "c3.sql" file.
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Related Questions
Consider the following recursive algorithm: (a) Prove that Algorithm Weirdsort correctly sorts the elements in the array A. 2 (b) Ignoring ceilings (i.e. we can assume that n is a power of 3 ), write the recurrence in terms of n describing how many calls are made to Weirdsort with an initial call of Weirdsort (A[0…n−1]) ? Hint: write a recurrence whose general form is R(n)= aR(n/b)+f(n) where a,b are rational numbers and f(n) is a function of n. Justify why your recurrence is counting the number of recursive calls. (c) Using this recurrence, prove that R(n) is at most n 3
when n≥2 using induction.
Answers
(a) To prove that Algorithm Weirdsort correctly sorts the elements in the array A, we need to show two things: (1) it terminates and (2) it produces a sorted array. For termination, the algorithm works by repeatedly dividing the array into three equal-sized subarrays and recursively calling itself on each subarray. 1.termination is guaranteed. To show that the algorithm produces a sorted array, we need to prove the correctness of the recursive calls. Let's assume that the Weirdsort algorithm works correctly for arrays of size less than n. Then, we can say that for any array of size n, the algorithm will correctly sort it by recursively sorting the subarrays.
(b) R(n) = 3R(n/3) + f(n) In this recurrence relation, n represents the size of the array and R(n) represents the number of recursive calls made to Weirdsort. The term 3R(n/3) accounts for the three recursive calls made on the three subarrays of size n/3 each. The term f(n) represents any additional operations or calls made outside of the recursive calls.
The recurrence relation accurately counts the number of recursive calls because for each recursive call, the size of the array is divided by 3. The initial call is made on an array of size n, and subsequent calls are made on subarrays of size n/3, n/9, n/27, and so on, until the base case of size 1 is reached.
(c) To prove that R(n) is at most n^3 when n≥2 using induction, we need to show two things: (1) the base case and (2) the inductive step. Base case: For n=2, we have R(2) = 3R(2/3) + f(2). Since n=2, the size of the array is reduced to 2/3 in the recursive call. Therefore, R(2/3) is the number of recursive calls made on an array of size 2/3. Since n<2, the base case holds. Inductive step: Assume that R(k) ≤ k^3 for all k.
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Define a function volume that consumes an integer and displays the volume of a cube with that as the length of one side. For example: Test Result volume (2); The cube's volume will be 8. Define a function average that consumes two float arguments and returns the (float) average of them.
Answers
Function volume takes an integer as input and calculates the volume of a cube with that integer as the length of one side, then displays the result. Function average takes two float inputs and returns their average as a float.
The problem statement requires defining two functions: volume() and average(). Let's look at each of them in turn.
Function volume()
The volume() function takes an integer argument length, which represents the length of one side of a cube, and displays the volume of the cube with that side length. Here's the function definition:
def volume(length):
"""
Computes and displays the volume of a cube with the given side length.
Parameters:
length (int): The length of one side of the cube.
Returns:
None
"""
volume = length ** 3
print("The cube's volume will be", volume)
The function begins by computing the volume of the cube using the formula volume = length ** 3. The result is stored in the volume variable.
The function then prints the result to the console using the print() function, along with a message describing what the result represents.
Note that this function doesn't return anything; it simply displays the result to the console. That's why the Returns section of the docstring says None.
To test the function, we can call it with an argument of 2 (for example) like this:
volume(2)
This will display the message "The cube's volume will be 8" on the console.
Function average()
The average() function takes two float arguments num1 and num2 and returns their average as a float value. Here's the function definition:
def average(num1, num2):
"""
Computes the average of two float numbers.
Parameters:
num1 (float): The first float number.
num2 (float): The second float number.
Returns:
float: The average of the two input numbers.
"""
avg = (num1 + num2) / 2
return avg
The function begins by computing the average of the two input numbers using the formula avg = (num1 + num2) / 2. The result is stored in the avg variable.
The function then returns the result as a float value using the return statement.
To test the function, we can call it with two float arguments (for example, 2.5 and 3.5) like this:
result = average(2.5, 3.5)
print(result)
This will display the message 3.0 on the console, which is the average of 2.5 and 3.5.
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2. What changes, if any, could Lisa make to her income?
Ramsey classroom
Answers
Answer: what changed if any could lisa make to her income
Explanation:
Blackjack game in simple MATLAB code with preferred no build-in functions Please
simple as in like while loop, for loop and if statements, rand
but cannot use randi and don't need levels
No need a start or ending screen like just the game only and please ADD COMMENTS explaining the code.
Answers
The MATLAB code implements a simplified version of Blackjack using loops, conditionals, and the rand function. Players can choose to hit or stand, while the dealer draws cards until their hand value reaches 17 or more. The winner is determined by comparing hand values, and the code focuses solely on gameplay without start or ending screens.
A simple implementation of a Blackjack game in MATLAB using basic control flow structures:
MATLAB
% Blackjack Game
% Initial setup
deck = [2:10, 10, 10, 10, 11]; % Cards in the deck (2-10, face cards worth 10, Ace worth 11)
playerHand = []; % Player's hand
dealerHand = []; % Dealer's hand
% Deal two initial cards to the player and the dealer
playerHand = [playerHand, drawCard(deck)];
dealerHand = [dealerHand, drawCard(deck)];
% Player's turn
while true
disp("Player's Hand: " + num2str(playerHand))
% Check if player's hand value is 21 (Blackjack)
if sum(playerHand) == 21
disp("Blackjack! You win!")
break
end
% Ask player for action
choice = input("Choose an action: (h)it or (s)tand: ", 's');
% Validate player's choice
if choice == 'h' || choice == 'H'
% Player chooses to hit, draw a card
playerHand = [playerHand, drawCard(deck)];
% Check if player's hand value exceeds 21 (Bust)
if sum(playerHand) > 21
disp("Bust! You lose.")
break
end
elseif choice == 's' || choice == 'S'
% Player chooses to stand, end player's turn
break
else
disp("Invalid choice, please try again.")
end
end
% Dealer's turn
while sum(dealerHand) < 17
% Dealer draws a card
dealerHand = [dealerHand, drawCard(deck)];
end
% Display final hands
disp("Player's Hand: " + num2str(playerHand))
disp("Dealer's Hand: " + num2str(dealerHand))
% Determine the winner
playerScore = sum(playerHand);
dealerScore = sum(dealerHand);
if playerScore > 21 || (dealerScore <= 21 && dealerScore > playerScore)
disp("Dealer wins!")
elseif dealerScore > 21 || (playerScore <= 21 && playerScore > dealerScore)
disp("Player wins!")
else
disp("It's a tie!")
end
% Function to draw a random card from the deck
function card = drawCard(deck)
idx = randi(length(deck)); % Randomly select an index from the deck
card = deck(idx); % Get the card value at the selected index
deck(idx) = []; % Remove the card from the deck
end
In this implementation, the game starts by dealing two initial cards to the player and the dealer. The player can then choose to hit (draw a card) or stand (end their turn). If the player's hand value exceeds 21, they bust and lose the game.
Once the player stands, it's the dealer's turn to draw cards until their hand value reaches at least 17. Finally, the hands are compared, and the winner is determined based on their hand values.
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Under which accounting method are most income statement accounts translated at the average exchange rate for the period ?
A) current/concurrent method
B) monetary/nonmonetary methode
C)temporal method
D)All of the options
Answers
Under the accounting method where most income statement accounts are translated at the average exchange rate for the period, the correct option is D) All of the options.
The current/concurrent method considers both monetary and nonmonetary balance sheet items and translates income statement accounts at the average exchange rate for the period. This method takes into account the fluctuations in exchange rates throughout the period and provides a more accurate representation of the financial results in the reporting currency.
By using the average exchange rate, the impact of exchange rate fluctuations on income statement accounts is spread out over the period, reducing the impact of currency volatility on reported earnings.
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which is the best software program
Answers
Answer:
The question "which is the best software program" is quite broad, as the answer can depend on the context and what you're specifically looking for in a software program. Software can be developed for a myriad of purposes and tasks, including but not limited to:
- Word processing (e.g., Microsoft Word)
- Spreadsheet management (e.g., Microsoft Excel)
- Graphic design (e.g., Adobe Photoshop)
- Video editing (e.g., Adobe Premiere Pro)
- Programming (e.g., Visual Studio Code)
- 3D modeling and animation (e.g., Autodesk Maya)
- Database management (e.g., MySQL)
- Music production (e.g., Ableton Live)
The "best" software often depends on your specific needs, your budget, your experience level, and your personal preferences. Therefore, it would be helpful if you could provide more details about what kind of software you're interested in, and for what purpose you plan to use it.
You have been putting off writing a research paper, and now it's due in two days. You have gathered a few notes, but fear you will not complete the assignment on time. You are considering purchasing a paper from a website that produces research papers on any topic, though you are concerned the content might not be original. Should you take a chance and purchase the research paper? Is using the website's services even ethical?
Answers
Answer:
No! You should not! This is not ethical at all because you did not do the work yourself, and you are benefiting (or lowering your grade) with work that is not yours! Also not to mention, can get caught and recieve a zero!
Explanation:
Answer:
No, this is not a good idea.
Explanation:
This is not a good decision.
First of all, you should avoid procrastinating things, especially important papers.
Additionally, using a website to write your paper is unethical, dishonest, not to mention it is plagiarism. Plagiarism is when you take someone else's words or work and say it is your own.
Teachers, professors and schools have many ways to detect plagiarism. You could be caught, receive a failing grade, and in some cases, be expelled.
It is never a good choice to pay for other people to do your work. Prepare accordingly and write it yourself!
Open the code8-3_anim.css file. Several keyframe animations have already been created for you. Add a keyframe animation named spinCube that contains the following frames:
At 0% apply the transform property with the rotateX() function set to 24deg and the rotateY() function set to 40deg.
At 50% change the value of the rotateX() function to 204deg and the rotateY() function to 220deg
At 100%, change the value of the rotateX() function to 384 and the rotateY() function to 400deg.
Create a style rule that applies the moveFront keyframe animation to the #faceFront object. Set the duration of the animation to 3 seconds and set the animation- fill-mode property to forwards.
Repeat the previous step for the #faceBack, #faceBottom, #faceLeft, #faceTop, and #faceRight objects using the moveBack, moveBottom, moveLeft, moveTop, and moveRight animations.
After the cube is assembled you want it to rotate. Create a style rule that applies the spinCube animation to the #cube object, running the animation over a 3 second duration after a delay of 3 seconds. Use the linear timing function and have the animation loop without ending.
Answers
The code that meets the above requirements is attached accordingly.
What is the explanation for the above response?
The code is creating a 3D cube using HTML and CSS animations. The cube is made up of six faces, each of which is a separate HTML element with a unique ID. The cube is assembled by positioning the faces correctly using CSS transformations.
The code defines several keyframe animations to move the cube's faces to their correct positions. Each animation is given a name and contains frames that specify the CSS transform values at different stages of the animation.
After the cube is assembled, the code applies the spinCube animation to the entire cube object, causing it to rotate continuously using the CSS transform property. The animation is set to loop without ending and has a 3-second duration with a 3-second delay before it starts. The timing function for the animation is set to linear, ensuring a smooth and even rotation.
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Which result is most likely to occur when a team collaborates?
OA. The team members don't understand what they are supposed to
do.
B. The team members work individually on their own projects.
C. The team brainstorms and works together to complete a project.
D. The team struggles with tasks and gives up.
SUBMIT
Answers
Answer:
C. The team brainstorms and works together to complete a project.
from my opinion hope you understand
which peripheral requires a video card? Monitor keyboard touchpad
Answers
Answer: touchpad
Explanation:
What is the output of this program?
numA=3
for count in range(4,7):
numA= numA+ count
Print(numA)
(YOU WILL BE MARKED AT BRAINLIEST)
Answers
Answer:
18
Explanation:
the loop goes from 4 to 6
so after first loop numA = 3 + 4 = 7
second loop numA = 7 + 5 = 12
thirs loop numA = 12 + 6 =18
The output of the program is 18. In this program the numbers are calculated.
What is program?Program is defined as a series of instructions written in a programming language that a computer may follow. A program's behavior when it is being used defines its functionality, which is frequently illustrated by how a user interacts with it. Low-level access to system memory is made possible by the procedural and general-purpose nature of the C programming language. To create an executable that a computer can run, a C program needs to be run through a C compiler.
As given
The loop goes from 4 to 6
So after 1 st loop numA = 3 + 4 = 7
2 nd loop numA = 7 + 5 = 12
3 rd loop numA = 12 + 6 =18
Thus, the output of the program is 18. In this program the numbers are calculated.
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A robot is designed to deliver snacks to patients in the hospital, allowing nurses to spend more time on skilled care. The robot needs to be able to navigate the hallways, avoiding patients who may be walking or using wheelchairs. What element of sensors addresses this concern?
security
communication
mobility
power source
Answers
Answer:
mobility
Explanation:
since it needs to move around people and navigate the hallways
MOBILITY
you welcome
i’ll mark as brainliest ❗️
list the steps to calculate the arithmetic mean of a list of numbers
BONUS: 10 points for a correctly drawn flowchart that shows how to calculate the mean of a list of values
Answers
2.Substitute the common difference and the first term into an=a1+d(n−1) a n = a 1 + d ( n − 1 ).
3) Substitute the last term for an and solve for n.
Hope this helps! ^^
How can we solve mental stress?
Hello can anyone answer
Answers
Answer:
Please don't delete it. Because other people did!
Explanation:
Use guided meditation, Practice deep breathing, Maintain physical exercise and good nutrition!
By making yourself comfortable around your environment.I know it can be hard but try making yourself feel distracted from stress.Have a break from what you are doing and take your time to heal.
Explanation:
Which of the following items are not a
component of a graphical user
interface?
(A) windows
(B) icons
(C) menus
(D) prompts
Answers
Answer:
D
Explanation:
we dont use prompts on graphical iser
Prompts following items are not a component of a graphical user interface.
What is Graphical user interface?
A mouse is used to interact with a graphics-based operating system interface, which uses menus and icons to govern user interaction. The Xerox GUI was made popular in the 1980s by the Apple Macintosh.
However, Microsoft Windows, the company's GUI, has since become the standard user interface for personal computers. At the time, Microsoft's operating system, MS-DOS, required the user to input particular commands (PCs).
A graphics library, an interface toolkit, an interface style guide, and standardized applications make up a complete GUI environment. A high-level graphics programming interface is offered by the graphics library.
Therefore, Prompts following items are not a component of a graphical user interface.
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during a mail merge what item aer merged
Answers
Answer: The mail merge process involves taking information from one document, known as the data source.
Explanation:
log(10×
\(log(10x4 \sqrt{10)} \)
What is the unique name given to a class called?
Answers
Answer:
A class is an extensible program-code template for creating objects.
Source: https://en.wikipedia.org/wiki/Class_(computer_programming)
, Hope this helps:)
Have a great day!!
The process of understanding and specifying in detail what the information system should accomplish is called systems ____.
Answers
The process of understanding and specifying in detail what the information system should accomplish is called systems analysis. Systems analysis involves gathering and analyzing requirements, defining the scope of the system, identifying the needs and goals of the stakeholders,
and determining the functions and features that the information system should have. It is an essential step in the development of an information system as it helps in creating a blueprint for the system design and development. Systems analysis also helps in identifying any potential risks or issues that need to be addressed in order to ensure the successful implementation of the information system.
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please help asap! someone good with python
Answers
Answer:
import turtle
t = turtle.Turtle()
for x in range(1,11):
t.circle(10*x)
you are a network engineer at star fisheries ltd., chicago. they want you to send an encrypted email to their branch office at michigan. in doing so, which of the osi layers would you apply?
Answers
You would apply the Application layer of the OSI model to send an encryption email to their branch office at Michigan.
The OSI model is a network architecture that is used to describe the different layers of network communication. The Application layer of the OSI model is responsible for enabling applications such as email, file transfer, and web browsing. This layer is responsible for providing the necessary services, protocols, and data formats to enable applications to communicate with each other. In this case, you would use the Application layer to send an encrypted email to the branch office at Michigan. This would involve using the appropriate encryption protocol, such as TLS, SSL, or SSH, to ensure that the communication is secure. Additionally, the Application layer would be responsible for ensuring that the data is properly formatted and that it is readable by the branch office.
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Which research game would be most useful when using qualitative research for an existing product buy a feature spider web?
Answers
When using qualitative research for an existing product, a research game that can be most useful is the "feature spider web." This game helps identify the different features or attributes of the product and visually map them out. Here's how you can use it:
1. Begin by drawing a large circle in the center of a piece of paper, representing the product you are studying.
2. Next, think about all the different features or attributes that are associated with the product.
3. Write each feature or attribute as a word or short phrase along the lines that radiate outward from the central circle.
4. Connect each feature or attribute with lines to the central circle, creating a spider web-like diagram.
5. Once you have identified all the features, you can analyze them to gain insights. Look for patterns, relationships, and potential areas of improvement.
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What is the difference between a class and an object in Python?
Answers
Answer: A class is a template for creating Python objects within a program, whereas the object itself is an instance of the Python class. You can think of a class as a blueprint for an object that includes the available functions and data variables.
Explanation:
A collection of data (variables) and methods (functions) that act on those variables constitutes an object. A class, similarly, is a blueprint for that object. A class can be compared to a rough sketch (prototype) of a house.
The role of the
protocol is to make sure communication is maintained.
FTP
IP
ТСР
HTTP
Answers
Answer:
Tcp
Explanation:
Need the answer rn!!!!
Answers
Answer:
what language is this? english or no
Explanation:
A(n) _______________ is a named homogeneous collection of items in which individual items are accessed by an index.
Answers
An array is a named homogeneous collection of items in which individual items are accessed by an index.
How does an array allow access to individual items?An array is a data structure that allows the storage and organization of a fixed-size collection of elements. It provides a way to access each individual item in the collection by using an index. Each element in the array is assigned a unique index, starting from 0, which represents its position in the collection.
Arrays are commonly used in programming languages to store and manipulate data efficiently. By using an index, we can retrieve or modify specific elements in the array without having to iterate through the entire collection. This direct access to elements based on their index makes arrays a powerful tool for managing and processing large sets of data.
Arrays can be implemented in various programming languages and offer different functionalities depending on the language and its specific features. They are widely used for tasks such as storing lists, implementing matrices, and managing data structures.
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we needs to print sheet1, sheet6, and sheet9 of a large workbook. what is the most efficient way to accomplish his task?
Answers
The most efficient way to print Sheet1, Sheet6, and Sheet9 of a large workbook is to use the Print Area function. This function allows the user to quickly select which sheets and/or cells they want to print.
What is Function ?Function is a set of instructions that performs a specific task when called or invoked. It is a subprogram or block of code that can be referenced or called upon when needed. Functions are useful as they can take inputs, process them, and return an output.
Functions also promote code reusability and reduce code redundancy, allowing developers to focus on the logic and structure of the program. By breaking down large and complex tasks into smaller chunks, functions can help make code easier to read, maintain, and debug.
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One drawback to using the Internet to search for evidence to guide clinical practice is:
Answers
One of the drawbacks of using the Internet to look for evidence to guide clinical practice is the presence of false information. With a plethora of information available on the Internet, it can be challenging to separate the valid information from the false ones.
Also, while many sources may provide accurate information, some may provide incorrect or biased information, which can be misleading to clinicians. With the absence of regulation of online information, it can be challenging for clinicians to determine the quality of the source and the validity of the information provided. This can result in clinicians basing their decisions on inaccurate data, leading to poor clinical practice. Additionally, some sources may have conflicting information, which can confuse clinicians and make it difficult for them to make informed decisions. Therefore, clinicians should be cautious when using the internet to search for evidence to guide clinical practice and should ensure that they are using reputable sources.
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61. Select an activity of the Production Phase: a. a web authoring tool is often used b. the graphics, web pages, and other components are created c. the web pages are individually tested d. all of the above
Answers
Answer:
d. all of the above.
Explanation:
Since the advent of digital technology, production of goods and services have experienced a significant change from the traditional methods of production. This paradigm shift is made possible by the application of various modern technology.
Production processes are generally being facilitated and enhanced by the use of;
1. Computer-integrated manufacturing (CIM).
2. Computer-aided process planning (CAPP).
3. Computer-aided design (CAD).
4. Computer numerical control (CNC).
In the process of selecting an activity of the production phase:
1. A web authoring tool is often used.
2. The graphics, web pages, and other components are created.
3. The web pages are individually tested.
__________ is sensitive data and unauthorized use could result in criminal prosecution or termination of employment. Junk mail SPAM CHRI Federal Law
Answers
FBI CJI data must be secured to prevent illegal access, use, or disclosure because it is sensitive information.
Is there sensitive data whose unauthorized access could lead to criminal charges or job termination?Criminal charges and/or employment termination may arise from unauthorized requests for, receipt of, release of, interception of, publication of, or discussion of FBI CJIS Data/CHRI.
What are sensitive and unauthorized data?Anything that should not be available to unauthorized access is considered sensitive data. Personal information that can be used to identify a specific individual, such as a Social Security number, financial data, or login credentials, is a type of sensitive data. enabling unauthorised access to FBI CJI at any time and for any purpose. Reminder: Unauthorized use of the FBI CJIS systems is forbidden and may result in legal action.
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A positive integer is called a perfect number if it is equal to the sum of all of its positive divisors, excluding itself. For example, 6 is the first perfect number because 6 = 3 + 2 + 1. The next is 28 = 14 + 7 + 4 + 2 + 1. There are four perfect numbers less than 10,000. Write a program to find all these four numbers.
Answers
i = 1
while i < 10001:
total = 0
x = 1
while x < i:
if i % x == 0:
total += x
x+=1
if total == i:
print(str(i)+" is a perfect number")
i += 1
When you run this code, you'll see that 6, 28, 496, and 8128 are all perfect numbers.