Initial data commit

Task/Evaluate-binomial-coefficients/C-sharp/evaluate-binomial-coefficients.cs

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+using System;
+
+namespace BinomialCoefficients
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            ulong n = 1000000, k = 3;
+            ulong result = biCoefficient(n, k);
+            Console.WriteLine("The Binomial Coefficient of {0}, and {1}, is equal to: {2}", n, k, result);
+            Console.ReadLine();
+        }
+
+        static int fact(int n)
+        {
+            if (n == 0) return 1;
+            else return n * fact(n - 1);
+        }
+
+        static ulong biCoefficient(ulong n, ulong k)
+        {
+            if (k > n - k)
+            {
+                k = n - k;
+            }
+
+            ulong c = 1;
+            for (uint i = 0; i < k; i++)
+            {
+                c = c * (n - i);
+                c = c / (i + 1);
+            }
+            return c;
+        }
+    }
+}