diff --git a/numbers/max/Maximum.cs b/numbers/max/Maximum.cs
new file mode 100644
index 000000000..ee8b867ea
--- /dev/null
+++ b/numbers/max/Maximum.cs
@@ -0,0 +1,20 @@
+namespace Hacktober_Numbers
+{
+    class Maximum
+    {
+        public static double Max(params double[] nums)
+        {
+            if (nums.Length == 0)
+            {
+                return double.NaN;
+            }
+            double biggest = nums[0];
+            for (int i = 1; i < nums.Length; i++)
+            {
+                if (nums[i] > biggest)
+                    biggest = nums[i];
+            }
+            return biggest;
+        }
+    }
+}