diff --git a/src/main/java/com/booleanuk/core/Exercise.java b/src/main/java/com/booleanuk/core/Exercise.java
index d31a45c..aa37db6 100644
--- a/src/main/java/com/booleanuk/core/Exercise.java
+++ b/src/main/java/com/booleanuk/core/Exercise.java
@@ -35,7 +35,6 @@ public ArrayList<Integer> getFavouriteNumbers() {
         list.add(42);
         list.add(360);
         list.add(120);
-
         return list;
     }
 
@@ -43,8 +42,12 @@ 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(){
 
+        ArrayList<Integer> list = getFavouriteNumbers();
+        return list.get(1);
 
+    }
 
     /*
         TODO: 2. Create a method named multiply that accepts two parameters in this order:
@@ -55,6 +58,12 @@ 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> list, int WholeNum){
+
+        list.replaceAll(e -> e * WholeNum);
+        return list;
+
+    }
 
 
 
@@ -64,7 +73,9 @@ public ArrayList<Integer> getFavouriteNumbers() {
          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();
+    }
 
     /*
         TODO: 4. Create a method named addIngredient that accepts two parameters in this order:
@@ -72,7 +83,10 @@ 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 ingredient){
+    list.add(ingredient);
+    return list;
+    }
 
 
     /*
@@ -81,7 +95,10 @@ 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 ingredient){
+        list.remove(ingredient);
+        return list;
+    }
 
 
     /*
@@ -90,7 +107,9 @@ 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 ingredient){
 
+        return list.contains(ingredient);
 
-
+}
 }