using System;

public class Program

{

    public static void Main()

    {

    }

​

    public static int Aleatorio(int Random)

    {

        Random rnd = new Random();

            Console.WriteLine("ramdon entre 10 a 30");

        for (int ctr = 1; ctr <= 20; ctr ++)

        {

            Console.Write("{0,6}",rnd.Next(10,30) );

            if (ctr %5 == 0) Console.WriteLine();

        }

        return Random;

    }

}