using System;

public class Program

{

    public static void Main()

    {

        int[,] ar2= new int [4,5];

        Random rand = new Random();

for (int i = 0; i < 3; i++)

{

for (int j = 0; j < 3; j++)

{

    ar2[i, j] = rand.Next(50);

​

}

    }

}

}