diff --git a/src/main/java/com/booleanuk/core/Exercise.java b/src/main/java/com/booleanuk/core/Exercise.java
index d31a45c..939d5e7 100644
--- a/src/main/java/com/booleanuk/core/Exercise.java
+++ b/src/main/java/com/booleanuk/core/Exercise.java
@@ -2,6 +2,7 @@
 
 import com.booleanuk.helpers.ExerciseBase;
 
+import java.lang.reflect.Array;
 import java.util.ArrayList;
 
 public class Exercise extends ExerciseBase {
@@ -43,7 +44,9 @@ public ArrayList<Integer> getFavouriteNumbers() {
         TODO: 1. Create a method named getSecondNumber that returns a whole number. It must return the
            second number contained in the list that is returned from getFavouriteNumbers
      */
-
+    public int getSecondNumber() {
+        return getFavouriteNumbers().get(1);
+    }
 
 
     /*
@@ -55,7 +58,10 @@ public ArrayList<Integer> getFavouriteNumbers() {
          Use the ArrayList's replaceAll method to iterate through the ArrayList and replace each value with its double
          https://www.programiz.com/java-programming/library/arraylist/replaceall
      */
-
+    public ArrayList<Integer> multiply(ArrayList<Integer> numbers, int number) {
+        numbers.replaceAll(integer -> integer * number);
+        return numbers;
+    }
 
 
     /*
@@ -63,7 +69,9 @@ public ArrayList<Integer> getFavouriteNumbers() {
          - A list of strings
          The method must return a boolean that indicates whether the provided list is empty or not
      */
-
+    public boolean isEmpty (ArrayList<String> list) {
+        return list.isEmpty();
+    }
 
 
     /*
@@ -72,7 +80,10 @@ public ArrayList<Integer> getFavouriteNumbers() {
          - A string
          The method must add the second parameter into the list provided and then return the list
      */
-
+    public ArrayList<String> addIngredient (ArrayList<String> list, String string) {
+        list.add(string);
+        return list;
+    }
 
 
     /*
@@ -81,7 +92,10 @@ public ArrayList<Integer> getFavouriteNumbers() {
          - A string
          The method must remove the second parameter from the list and then return the list
      */
-
+    public ArrayList<String> removeIngredient (ArrayList<String> list, String string) {
+        list.remove(string);
+        return list;
+    }
 
 
     /*
@@ -90,7 +104,9 @@ public ArrayList<Integer> getFavouriteNumbers() {
          - A string
          The method must return a boolean that indicates whether the second parameter exists in the provided list
      */
-
+    public boolean containsIngredient (ArrayList<String> list, String string) {
+        return list.contains(string);
+    }
 
 
 }