COMPUTERS AND TECHNOLOGY COLLEGE

A proper divisor of a positive integer $n$ is a positive integer $d < n$ such that $d$ divides $n$ evenly, or alternatively if $n$ is a multiple of $d$. For example, the proper divisors of 12 are 1, 2, 3, 4, and 6, but not 12. A positive integer $n$ is called double-perfect if the sum of its proper divisors equals $2n$. For example, 120 is double-perfect (and in fact is the smallest double-perfect number) because its proper divisors are 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, and 60, and their sum is 240, which is twice 120. There is only one other 3-digit double-perfect number. Write a Python program to find it, and enter the number as your answer below.

Answers

Answer 1
Answer:

Answer:

The program written in Python is as follows:

See Explanation section for line by line explanation

for n in range(100,1000):

     isum = 0

     for d in range(1,n):

           if n%d == 0:

                 isum += d

     if isum == n * 2:

           print(n)

Explanation:

The program only considers 3 digit numbers. hence the range of n is from 100 to 999

for n in range(100,1000):

This line initializes sum to 0

     isum = 0

This line is an iteration that stands as the divisor

     for d in range(1,n):

This line checks if a number, d can evenly divide n

           if n%d == 0:

If yes, the sum is updated

                 isum += d

This line checks if the current number n is a double-perfect number

     if isum == n * 2:

If yes, n is printed

           print(n)

When the program is run, the displayed output is 120 and 672

Related Questions

Which of these is outside the scope of an art director's responsibility?
Write a program that accepts a four digit number, such as 1998, and displays it on number on a line, like: 1 9 9 8 The program should prompt for a four digit number. The program assumes that the user enters the correct information. Provide the java code, including a comment with your name, course code and date.
Two-factor authentication can best be breached by the adversary using:________. a. social engineering attack b. using sniffers like Wireshark and capturing packets c. using rootkits and privilege escalation to get to the kernel processes d. using a virus and destroying the computer that stores authentication information.
In real-world environments, once the domains that are affected by the risks are identified, subsequent next steps would include:______.
/* ELEN 1301 Programming Assignment #5. Name : Your name. Student ID : Your student ID #. Due date : Due date Purpose of the program : Finding the average, minimum and maximum values of seven entered numbers. Use iomanip library to show 3 digits below decimal point. Section 1 : Enter the first number. Set min and max variables to the entered number. Section 2 : Enter the next number. If it is smaller than min, replace the min with the entered number. If it is bigger than max, replace the max with the entered number. Section 3 : Repeat section 2 five more times, so that you have seven numbers. Section 4 : Calculate the average of the seven numbers and show the result with 3 digits below decimal point. (2 points) Section 5 : Show the minimum number. (2 points) Section 6 : Show the maximum number. (2 points) */ #include #include using namespace std; int main() { int n1, n2, n3, n4, n5, n6, n7, min, max; double sum = 0; // Write the rest of the program. return 0; } // main

What suggestions do you have for preventing scope creep in projects?

Answers

Answer:

Scope creep is defined as the uncontrolled changes occur in the projects scope is known as scope creep. It basically occur when the project scope are not properly define and controlled.

Suggestions for preventing scope creep in projects are as follow:

  •   By using the online projects software and the software management help in prevent the scope creep in the projects.
  •   We should always focus on the projects requirements and must understand the main vision of the clients.
  •   There is no requirement of overdoing in projects rather keeping it simple and accurate according to the main requirements. otherwise, it may lead to scope creep.

What makes a computer a computer?​

Answers

Answer:

A computer is an electronic device that manipulates information, or data. It has the ability to store, retrieve, and process data. You may already know that you can use a computer to type documents, send email, play games, and browse the Web

Explanation:

Follow me..............

central processor unit (CPU)

memory (ram)

input (mouse keyboard)

output (monitor or printer)

browse the web

ability to store retrieve and process data

I don't rlly know much about technology but I hope this helps

Volume of Pyramid = A*h/3 where A is the area of the base of the pyramid and h is the height of the pyramid. Write a C++ program that asks the user to enter the necessary information about the pyramid (note that the user would not know the area of the base of the pyramid, you need to ask them for the length of one of the sides of the base and then calculate the area of the base). Using the information the user input, calculate the volume of the pyramid. Next display the results (rounded to two decimal places). Example Output (output will change depending on user input): The area of the base of the pyramid is: 25.00 The height of the pyramid is: 5.00 The volume of the pyramid is: 41.67 *Pseudocode IS required for this program and is worth 1 point. The program IS auto-graded.

Answers

Answer:

#include <iostream>

#include <iomanip>

using namespace std;

int main()

{

   double side, height;

   

   cout<<"Enter the length of one of the sides of the base: ";

   cin>>side;

   cout<<"Enter the height: ";

   cin>>height;

   

   double area = side * side;

   double volume = area * height / 3;

   

   cout<<"The area of the base of the pyramid is: "<<area<<endl;

   cout<<"The height of the pyramid is: "<<height<<endl;

   cout<<"The volume of the pyramid is: "<<fixed<<setprecision(2)<<volume<<endl;

   return 0;

}

Pseudocode:

Declare side, height

Get side

Get height

Set area = side * side

Set volume = area * height / 3

Print area

Print height

Print volume

Explanation:

Include <iomanip> to have two decimal places

Declare the side and height

Ask the user to enter side and height

Calculate the base area, multiply side by side

Calculate the volume using the given formula

Print area, height and volume (use fixed and setprecision(2) to have two decimal places)

If two light bulbs are wired in series and one bulb burns out the other bulb will

Answers

The other bulb won't work.
the other bulb would not work

Which of the following describes a 2×4 decoder? A)-Two AND gates, four Inverters, and one OR gate.
B)-Two Inverters, four AND gates, and one OR gate.
C)-Two OR gates, four AND gates, and one Inverter.
D)-Two Inverters, four OR gates, and one AND gate.
E)-Two Inverters, four AND gates, and no OR gates.

Answers

Answer:

A decoder is a circuit which has n inputs and 2n outputs, and outputs 1 on the wire corresponding to the binary number represented by the inputs. For example, a 2-4 decoder might be drawn like this:

and its truth table (again, really four truth tables, one for each output) is:

i1  i0  d3  d2  d1  d0

0 0 0 0 0 1

0 1 0 0 1 0

1 0 0 1 0 0

1 1 1 0 0 0

Explanation:

The following circuit generates all four minterms from two inputs, and implements the 2-4 decoder.

People convicted of cyberbullying in most statesface no punishment for their actions.
face varying degrees of punishment.
are taught how to use technology positively.
are forced to do community service.

Answers

Answer: The Answer is B. face varying degrees of punishment.

Hope this helps! ^^ (also i know this is the right answer because i got it correct)

Answer:

b

Explanation: the punishment depends on the severeness , so we dont know the exact punishment
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