diff --git a/Start.cs b/Start.cs
index cb3cae5..ccfd6f4 100644
--- a/Start.cs
+++ b/Start.cs
@@ -140,6 +140,25 @@ public class Start
                 int B = Convert.ToInt32(Console.ReadLine());
                 Console.WriteLine("Step: " + pract.stepNum(A, B));
                 break;
+            
+            case 8:
+                Console.WriteLine("Input size mass");
+                int size = Convert.ToInt32(Console.ReadLine());
+                Console.WriteLine("Input min");
+                int min = Convert.ToInt32(Console.ReadLine());
+                Console.WriteLine("Input max");
+                int max = Convert.ToInt32(Console.ReadLine());
+                pract.chengeMass(pract.newRandomMass(size, min, max));
+                break;
+            
+            case 9:
+                Console.WriteLine("Input min");
+                int min1 = Convert.ToInt32(Console.ReadLine());
+                Console.WriteLine("Input max");
+                int max1 = Convert.ToInt32(Console.ReadLine());
+                Console.WriteLine("Count: " + pract.mass20random(pract.newRandomMass(20, min1, max1)));
+
+                break;
 
             default:
                 Console.WriteLine("Wrong task");
diff --git a/bin/Debug/net6.0/programming_GB.dll b/bin/Debug/net6.0/programming_GB.dll
index e4d21e1..74431eb 100644
Binary files a/bin/Debug/net6.0/programming_GB.dll and b/bin/Debug/net6.0/programming_GB.dll differ
diff --git a/bin/Debug/net6.0/programming_GB.pdb b/bin/Debug/net6.0/programming_GB.pdb
index bef17dd..3ee28be 100644
Binary files a/bin/Debug/net6.0/programming_GB.pdb and b/bin/Debug/net6.0/programming_GB.pdb differ
diff --git a/obj/Debug/net6.0/programming_GB.dll b/obj/Debug/net6.0/programming_GB.dll
index e4d21e1..74431eb 100644
Binary files a/obj/Debug/net6.0/programming_GB.dll and b/obj/Debug/net6.0/programming_GB.dll differ
diff --git a/obj/Debug/net6.0/programming_GB.pdb b/obj/Debug/net6.0/programming_GB.pdb
index bef17dd..3ee28be 100644
Binary files a/obj/Debug/net6.0/programming_GB.pdb and b/obj/Debug/net6.0/programming_GB.pdb differ
diff --git a/obj/Debug/net6.0/ref/programming_GB.dll b/obj/Debug/net6.0/ref/programming_GB.dll
index d684cd3..94714fd 100644
Binary files a/obj/Debug/net6.0/ref/programming_GB.dll and b/obj/Debug/net6.0/ref/programming_GB.dll differ
diff --git a/obj/Debug/net6.0/refint/programming_GB.dll b/obj/Debug/net6.0/refint/programming_GB.dll
index d684cd3..94714fd 100644
Binary files a/obj/Debug/net6.0/refint/programming_GB.dll and b/obj/Debug/net6.0/refint/programming_GB.dll differ