Which button is used to open the Start menu in Windows Vista?

Write a program to find and print the sum of the first n cubes in the following four ways.

klio [65]

Answer:

The solution code is written in Java.

public class Main {
public static void main(String[] args) {
System.out.print("Please enter a number: ");
Scanner console = new Scanner(System.in);
int n = console.nextInt();
calculateSum1(n);
calculateSum2(n);
calculateSum3(n);
calculateSum4(n);
}
public static void calculateSum1 (int num){
int sum1 = 0;
for(int i=1; i <= num; i++){
sum1 += i*i*i;
}
System.out.println("Sum 1 : " + sum1);
}
public static void calculateSum2 (int num){
int sum2 = num * num * (num + 1) * (num + 1) / 4;
System.out.println("Sum 2 : " + sum2);
}
public static void calculateSum3 (int num){
int sum3 = 0;
for(int i=1; i <=num; i++){
sum3 += i;
}
sum3 = sum3 * sum3;
System.out.println("Sum 3 : " + sum3);
}
public static void calculateSum4 (int num){
int sum4 = (num * (num + 1) * (2*num + 1)) / (4+2);
System.out.println("Sum 4 : " + sum4);
}
}

Explanation:

Firstly we create four different methods that calculate the sum of the first n cubes in different ways (Line 13 - 43).

This is important to understand the concept of operator precedence to work out the different ways of summation.

For example, The operator * and / will always have higher precedence than +.

On another hand, any expression enclosed within the parenthesis will have highest precedence and therefore the value will be evaluated prior to others.

This is also important to understand the expression evaluation will always start from left to right.

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A peripheral can be used to tell a computer to complete a specific task. A) True B)False

RoseWind [281]

Answer:

A. true

Explanation:

because you can complete it without it mistakes if your using an computer but if you use an paper you will make mistakes over and over

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Nuetrik [128]

I’m making this easy & basic so if you need to use it, feel free!

Dear Future me, It feels a little strange to be writing a letter to my future self, but it’s also rather exciting! At present I am very interested in sports and am sure this is a hobby that has proved beneficial because I can hit a home run.
So tell me have things changed a lot? Do we still have a lot of restaurants? Has Artificial Intelligence proved to be taking over the world? You must be so used to social distancing while we struggle to figure out a cure.

Is our pet fish doing well or have you replaced it with robot? Ha! Ha! It’s so much easier, right?! How is your preparation for the new job? Must be really nice to be an adult! Have you changed our hair? Maybe our style? Am sure things have turned out well for you in 2030. Great talking to you! Stay safe.It’s been nice writing to you Hope this letter brings back old memories…

Sincerely, past you.

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A very small video that is continuous is called a GIF, which stands for Graphics Interchange Format.

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