diff --git a/exam/exercise 11/Program.cs b/exam/exercise 11/Program.cs
new file mode 100644
index 0000000..8fed199
--- /dev/null
+++ b/exam/exercise 11/Program.cs	
@@ -0,0 +1,34 @@
+using System;
+
+namespace exercise_11
+{
+    public class Program
+    {
+        public static int Summa(int a, int b, int c)
+        {
+            return a + b + c;
+        }
+
+        public static void Main()
+        {
+            int[] Massiv = new int[10];
+            Massiv[0] = 4;
+            Massiv[1] = 2;
+            Massiv[2] = 7;
+
+            for (int i = 3; i < 10; i++)
+            {
+                Massiv[i] = Summa(Massiv[i - 3], Massiv[i - 2], Massiv[i - 1]);
+            }
+
+            Console.Write("Первые 10 элементов ряда: ");
+
+            foreach (int j in Massiv)
+            {
+                Console.Write($"{j} ");
+            }
+
+            Console.ReadLine();
+        }
+    }
+}
diff --git a/exam/exercise 11/exercise 11.csproj b/exam/exercise 11/exercise 11.csproj
new file mode 100644
index 0000000..cbacc5c
--- /dev/null
+++ b/exam/exercise 11/exercise 11.csproj	
@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp2.1</TargetFramework>
+    <RootNamespace>exercise_11</RootNamespace>
+  </PropertyGroup>
+
+</Project>
diff --git a/exam/exercise 14/Car.cs b/exam/exercise 14/Car.cs
new file mode 100644
index 0000000..ac9e390
--- /dev/null
+++ b/exam/exercise 14/Car.cs	
@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace exercise_14
+{
+    class Car
+    {
+        public string start()
+        {
+            return $"Машина стартует";
+        }
+
+        public string stop()
+        {
+            return $"Машина останавливается";
+        }
+
+        public int drive(int howlong)
+        {
+            return howlong * 60;
+        }
+    }
+}
diff --git a/exam/exercise 14/Program.cs b/exam/exercise 14/Program.cs
new file mode 100644
index 0000000..fba76e0
--- /dev/null
+++ b/exam/exercise 14/Program.cs	
@@ -0,0 +1,17 @@
+using System;
+
+namespace exercise_14
+{
+    class Program
+    {
+        static void Main()
+        {
+            Car car = new Car();
+            double howlong = 200;
+            Console.WriteLine(car.start());
+            Console.WriteLine($"За время равное {howlong} минутам, расстроение пройденное машиной будет равно {car.drive(200)}");
+            Console.WriteLine(car.stop());
+            Console.ReadKey();
+        }
+    }
+}
diff --git a/exam/exercise 14/exercise 14.csproj b/exam/exercise 14/exercise 14.csproj
new file mode 100644
index 0000000..a4891d1
--- /dev/null
+++ b/exam/exercise 14/exercise 14.csproj	
@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp2.1</TargetFramework>
+    <RootNamespace>exercise_14</RootNamespace>
+  </PropertyGroup>
+
+</Project>
diff --git a/exam/exercise 16/LengthConverter.cs b/exam/exercise 16/LengthConverter.cs
new file mode 100644
index 0000000..bbd747e
--- /dev/null
+++ b/exam/exercise 16/LengthConverter.cs	
@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace exercise_16
+{
+    class LengthConverter
+    {
+        public double ConvertMilesToKm(double length)
+        {
+            return length * 1.609;
+        }
+        public double ConvertKmToMiles(double length)
+        {
+            return length / 1.609;
+        }
+    }
+}
diff --git a/exam/exercise 16/Program.cs b/exam/exercise 16/Program.cs
new file mode 100644
index 0000000..3f9149f
--- /dev/null
+++ b/exam/exercise 16/Program.cs	
@@ -0,0 +1,20 @@
+using System;
+
+namespace exercise_16
+{
+    class Program
+    {
+        public static void Main()
+        {
+            LengthConverter converter = new LengthConverter();
+            double length;
+            Console.Write("Введите длину: ");
+            length = Convert.ToDouble(Console.ReadLine());
+
+            Console.WriteLine($"Перевести {length} милей в километры: {converter.ConvertMilesToKm(length)}");
+            Console.WriteLine($"Перевести {length} километров в мили: {converter.ConvertKmToMiles(length)}");
+
+            Console.ReadLine();
+        }
+    }
+}
diff --git a/exam/exercise 16/exercise 16.csproj b/exam/exercise 16/exercise 16.csproj
new file mode 100644
index 0000000..0dd3fa2
--- /dev/null
+++ b/exam/exercise 16/exercise 16.csproj	
@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp2.1</TargetFramework>
+    <RootNamespace>exercise_16</RootNamespace>
+  </PropertyGroup>
+
+</Project>