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diff --git a/mcs/class/Mono.C5/UserGuideExamples/RandomSelection.cs b/mcs/class/Mono.C5/UserGuideExamples/RandomSelection.cs
deleted file mode 100644
index 8049758ad67..00000000000
--- a/mcs/class/Mono.C5/UserGuideExamples/RandomSelection.cs
+++ /dev/null
@@ -1,86 +0,0 @@
-/*
- Copyright (c) 2003-2006 Niels Kokholm and Peter Sestoft
- Permission is hereby granted, free of charge, to any person obtaining a copy
- of this software and associated documentation files (the "Software"), to deal
- in the Software without restriction, including without limitation the rights
- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- copies of the Software, and to permit persons to whom the Software is
- furnished to do so, subject to the following conditions:
- 
- The above copyright notice and this permission notice shall be included in
- all copies or substantial portions of the Software.
- 
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- SOFTWARE.
-*/
-
-// C5 example: RandomSelection.cs for pattern chapter
-
-// Compile with 
-//   csc /r:C5.dll RandomSelection.cs 
-
-using System;
-using C5;
-using SCG = System.Collections.Generic;
-
-namespace RandomSelection {
-  class RandomSelection {
-    public static void Main(String[] args) {
-      ArrayList<int> list = new ArrayList<int>(), copy1, copy2;
-      list.AddAll(new int[] { 2, 3, 5, 7, 11, 13, 17, 19 });
-      copy1 = (ArrayList<int>)list.Clone();
-      copy2 = (ArrayList<int>)list.Clone();
-      const int N = 7;
-      Console.WriteLine("-- With replacement:");
-      foreach (int x in RandomWith(list, N))
-        Console.Write("{0} ", x);
-      Console.WriteLine("\n-- Without replacement:");
-      foreach (int x in RandomWithout1(copy1, N))
-        Console.Write("{0} ", x);
-      Console.WriteLine("\n-- Without replacement:");
-      foreach (int x in RandomWithout2(copy2, N))
-        Console.Write("{0} ", x);
-      Console.WriteLine();
-    }
-
-    private static readonly C5Random rnd = new C5Random();
-
-    // Select N random items from coll, with replacement.
-    // Does not modify the given list.
-
-    public static SCG.IEnumerable<T> RandomWith<T>(IIndexed<T> coll, int N) {
-      for (int i=N; i>0; i--) { 
-        T x = coll[rnd.Next(coll.Count)];
-        yield return x;
-      }
-    }
-
-    // Select N random items from list, without replacement.
-    // Modifies the given list.
-
-    public static SCG.IEnumerable<T> RandomWithout1<T>(IList<T> list, int N) {
-      list.Shuffle(rnd);     
-      foreach (T x in list.View(0, N)) 
-        yield return x;
-    }
-
-    // Select N random items from list, without replacement.
-    // Faster when list is efficiently indexable and modifiable.
-    // Modifies the given list.
-
-    public static SCG.IEnumerable<T> RandomWithout2<T>(ArrayList<T> list, int N) {
-      for (int i=N; i>0; i--) { 
-        int j = rnd.Next(list.Count);
-        T x = list[j], replacement = list.RemoveLast();
-        if (j < list.Count) 
-          list[j] = replacement;
-        yield return x;
-      }
-    }
-  }
-}