Generate a random number for captcha

using System; 
 
class Program
{
   private Random random = new Random();
 
   private int RandomNumber (int min, int max)
   {
      return random.Next (min, max); 
   }
 
   public static void Main(string[] args)
   {
      Program program = new Program();
      for (int i = 0; i <= 10; i++)
      {
         Console.WriteLine (program.RandomNumber(1, 100));
      }
 
      Console.ReadKey(); // wait so you have time to see the output
   }
}