Combinatoric selections

eular_53.cs

using System;
using System.Collections.Generic;
using System.Text;
namespace eular_53
{
    class Program
    {
        static void Main(string[] args)
        {
            long exeedsmilliom = 0;
            for (int n = 1; n <= 100; n++)
                for (int r = 1; r <= 100; r++)
                    if (C(n, r) > 1000000) exeedsmilliom++;
            Console.WriteLine(exeedsmilliom);
            Console.ReadKey();
        }
        static public double multiplexer(int num)
        {
            double tmp = 1;
            for (int c = 1; c <= num; c++)
                tmp *= c;
            return tmp;
        }
        static public double C(int n, int r)
        {
            return multiplexer(n) / (multiplexer(r) * multiplexer(n - r));
        }
    }
}