System.Random rnd = new System.Random();
        IEnumerable<int> numbers = Enumerable.Range(0, 10).OrderBy(r => rnd.Next()).Take(3);
        List<int> nums = numbers.ToList();
        nums.ForEach(I => Response.Write(I.ToString() + "<br/>"));
        if (nums.Sum().ToString().Length == 1)
        {
            Response.Write("00" + nums.Sum().ToString());
        }
        else if (nums.Sum().ToString().Length == 2)
        {
            Response.Write("0" + nums.Sum().ToString());
        }
        else
        {
            Response.Write(nums.Sum().ToString());
        }