If n is considered as n.n matrix and for the n*n matrix we should find the addition of n th number

Question

Eg. If n =3
Then matrix will be
123
456
789
And the addition will be like E=3+6+9
Write a code for this concept

Answer 1

import java.util.*;
public class Program{
public static void main(String[] args){
int n=new Scanner(System.in).nextInt();
System.out.print(n*n*(n+1)/2);}
}

//here is the code , !(the answer)
//hope it helped now ☺

Answer 2

If it is 3*3
It is not that u have to sum last number
It depends on the n

Answer 3

Can you please send me the ans
Of codechef. Com/jan18/problems /maxsc

Answer 4

C++

Answer 5

Code in c++