using System;
 
public class Test
{
	static Random m_Random = new Random();
 
	public static void Main()
	{
		double probability = 0.9;
 
		int counter = 0;
		int tries = 10;
 
		for (int i = 0; i < tries; i++) {
			if (CompareWithRandom(probability)) {
				counter++;
			}
		}
 
		Console.WriteLine("Probabilty is: " + (counter * 100d / tries).ToString("#0.00") + "%");
	}
 
	private static bool CompareWithRandom(double probability)
	{
		return probability >= m_Random.NextDouble();
	}
}

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