diff --git a/src/main/java/io/zipcoder/microlabs/mastering_loops/MainApp.java b/src/main/java/io/zipcoder/microlabs/mastering_loops/MainApp.java
index 29e339b..059d032 100644
--- a/src/main/java/io/zipcoder/microlabs/mastering_loops/MainApp.java
+++ b/src/main/java/io/zipcoder/microlabs/mastering_loops/MainApp.java
@@ -7,5 +7,7 @@
  */
 public class MainApp {
     public static void main(String[] args) {
+
+
     }
 }
diff --git a/src/main/java/io/zipcoder/microlabs/mastering_loops/NumberUtilities.java b/src/main/java/io/zipcoder/microlabs/mastering_loops/NumberUtilities.java
index 5a742c4..6df17b8 100644
--- a/src/main/java/io/zipcoder/microlabs/mastering_loops/NumberUtilities.java
+++ b/src/main/java/io/zipcoder/microlabs/mastering_loops/NumberUtilities.java
@@ -3,22 +3,68 @@
 
 public class NumberUtilities {
     public static String getEvenNumbers(int start, int stop) {
-        return null;
+
+        String outcome = "";
+
+        for (int i = start; i <= stop; i++){
+
+            if (i % 2 == 0)
+            {
+
+            outcome += i;
+
+            }
+
+        }
+
+        return outcome;
     }
 
 
     public static String getOddNumbers(int start, int stop) {
-        return null;
+
+        String outcome = "";
+
+        for (int i = start; i <= stop; i++)
+
+        {
+            if (i % 2 != 0)
+            {
+
+                outcome += i;
+
+            }
+        }
+
+
+        return outcome;
     }
 
 
     public static String getSquareNumbers(int start, int stop, int step) {
-        return null;
+
+        String outcome = "";
+
+        for (int i = start; i < stop; i += step)
+        {
+             outcome += i * i;
+        }
+
+        return outcome;
     }
 
 
     public static String getRange(int start, int stop, int step) {
-        return null;
+
+        String outcome = "";
+
+        for (int i = start; i < stop; i += step)
+        {
+            outcome += i;
+
+        }
+
+        return outcome;
     }
 
 
diff --git a/src/main/java/io/zipcoder/microlabs/mastering_loops/TableUtilities.java b/src/main/java/io/zipcoder/microlabs/mastering_loops/TableUtilities.java
index e27a826..9e83ae2 100644
--- a/src/main/java/io/zipcoder/microlabs/mastering_loops/TableUtilities.java
+++ b/src/main/java/io/zipcoder/microlabs/mastering_loops/TableUtilities.java
@@ -1,15 +1,74 @@
 package io.zipcoder.microlabs.mastering_loops;
 
-public class TableUtilities {
-    public static String getSmallMultiplicationTable() {
-        return null;
+
+public class TableUtilities
+{
+    public static String getSmallMultiplicationTable()
+    {
+        //stringBuilder are mutable/can be changed
+        StringBuilder smallMultiplicationTable = new StringBuilder();
+
+        for (int i = 1; i <= 5; i++)
+        {
+            for (int j = 1; j<= 5; j++)
+            {
+
+                int num = i * j;
+                smallMultiplicationTable.append(String.format("%3d |", num));
+
+            } smallMultiplicationTable.append("\n");
+
+
+        }
+
+        String myTable = smallMultiplicationTable.toString();
+        return myTable;
+
+
+
     }
 
     public static String getLargeMultiplicationTable() {
-        return null;
+
+        StringBuilder largeMultiplicationTable = new StringBuilder();
+
+        for (int i = 1; i <= 10; i++)
+        {
+
+            for (int j = 1; j <= 10; j++)
+            {
+                int num = i  * j;
+                largeMultiplicationTable.append(String.format("%3d |", num));
+
+            } largeMultiplicationTable.append("\n");
+        }
+
+        String largeTable = largeMultiplicationTable.toString();
+        return largeTable;
     }
 
     public static String getMultiplicationTable(int tableSize) {
-        return null;
+
+
+
+            StringBuilder multiplicationTable = new StringBuilder();
+
+            for (int i = 1; i <= tableSize; i++){
+
+                for (int j = 1; j <= tableSize; j++){
+
+                    int num = i * j;
+                    multiplicationTable.append(String.format("%3d |", num));
+
+                } multiplicationTable.append(String.format("\n"));
+
+            }
+
+            String myTable = multiplicationTable.toString();
+            return myTable;
+
+
+        }
+
     }
-}
+
diff --git a/src/main/java/io/zipcoder/microlabs/mastering_loops/TriangleUtilities.java b/src/main/java/io/zipcoder/microlabs/mastering_loops/TriangleUtilities.java
index 0c7cd35..d8eff2e 100644
--- a/src/main/java/io/zipcoder/microlabs/mastering_loops/TriangleUtilities.java
+++ b/src/main/java/io/zipcoder/microlabs/mastering_loops/TriangleUtilities.java
@@ -3,18 +3,38 @@
 public class TriangleUtilities {
 
     public static String getTriangle(int numberOfRows) {
-        return null;
+
+        String triangle = "";
+
+        for (int i = 1; i < numberOfRows; i++){
+
+            triangle += TriangleUtilities.getRow(i) + "\n";
+        }
+
+        return triangle;
     }
 
     public static String getRow(int numberOfStars) {
-        return null;
+
+        String row = "";
+
+        for (int i = 1; i <= numberOfStars; i++)
+        {
+            row += "*";
+
+        }
+
+        return row;
     }
 
+    //
     public static String getSmallTriangle() {
-        return null;
+
+       return getTriangle(5);
     }
 
     public static String getLargeTriangle() {
-        return null;
+
+        return getTriangle(10);
     }
 }
diff --git a/src/test/java/io/zipcoder/microlabs/mastering_loops/NumberUtilitiesTest.java b/src/test/java/io/zipcoder/microlabs/mastering_loops/NumberUtilitiesTest.java
index e579b43..5ce91f7 100644
--- a/src/test/java/io/zipcoder/microlabs/mastering_loops/NumberUtilitiesTest.java
+++ b/src/test/java/io/zipcoder/microlabs/mastering_loops/NumberUtilitiesTest.java
@@ -51,7 +51,7 @@ public void testGetRange2() {
     @Test
     public void testGetEvenNumbers() {
         // : Given
-        String expected = "5791113151719";
+        String expected = "681012141618";
         int start = 5;
         int stop = 20;
 
@@ -65,7 +65,7 @@ public void testGetEvenNumbers() {
     @Test
     public void testGetOddNumbers() {
         // : Given
-        String expected = "681012141618";
+        String expected = "5791113151719";
         int start = 5;
         int stop = 20;
         int step = 5;