using System;

using System.Linq;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        var redredCount = 0;

        var sampleSize = 100000;

        var logging = false;

        var sample = Enumerable.Range(1, sampleSize);

        var balls = new List<string> {

            "yellow",

            "red",

            "red",

            "blue",

        };

        Console.WriteLine("Starting Test");

        foreach(var test in sample)

        {

            if (logging)

            {

                Console.WriteLine("\tTest {0} of {1}", test, sampleSize);

            }

            var selection = balls.OrderBy(x => Guid.NewGuid())

                                 .TakeWhile(x => x == "red");

            if (selection.All(s => s == "red"))

            {

                redredCount++;

            }

        }

        Console.WriteLine("Test Complete");

        decimal percentage = Convert.ToDecimal(redredCount) / Convert.ToDecimal(sampleSize);

        Console.WriteLine("Red Red Happens {0} / {1} times. {2}", redredCount, sampleSize, percentage);

    }

}