diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 0000000..f0a9209
Binary files /dev/null and b/.DS_Store differ
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..ebe19c5 100644
--- a/src/main/java/io/zipcoder/microlabs/mastering_loops/NumberUtilities.java
+++ b/src/main/java/io/zipcoder/microlabs/mastering_loops/NumberUtilities.java
@@ -1,28 +1,55 @@
 package io.zipcoder.microlabs.mastering_loops;
 
 
+
+
 public class NumberUtilities {
+
+
     public static String getEvenNumbers(int start, int stop) {
-        return null;
+        StringBuilder myRange = new StringBuilder();
+        for (int i = start; i < stop; i+=2){
+            myRange.append(i);
+        }
+        return myRange.toString();
+
     }
 
 
     public static String getOddNumbers(int start, int stop) {
-        return null;
+        StringBuilder myRange = new StringBuilder();
+        for (int i = start; i < stop; i+=2){
+            myRange.append(i);
+        }
+        return myRange.toString();
     }
 
 
     public static String getSquareNumbers(int start, int stop, int step) {
-        return null;
+        StringBuilder myRange = new StringBuilder();
+        for (int i = start; i < stop; i+=step){
+            myRange.append((long)(Math.pow(i,2)));
+        }
+        return myRange.toString();
     }
 
 
     public static String getRange(int start, int stop, int step) {
-        return null;
+       StringBuilder myRange = new StringBuilder();
+        for (int i = start; i < stop; i+=step){
+            myRange.append(i);
+        }
+        return myRange.toString();
+
+
     }
 
 
     public static String getExponentiations(int start, int stop, int step, int exponent) {
-        return null;
+        StringBuilder myRange = new StringBuilder();
+        for (int i = start; i < stop; i+=step){
+            myRange.append((long)(Math.pow(i, exponent)));
+        }
+        return myRange.toString();
     }
 }
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..a0c3f22 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 +1,54 @@
 package io.zipcoder.microlabs.mastering_loops;
 
+
+
+@SuppressWarnings("ALL")
 public class TableUtilities {
     public static String getSmallMultiplicationTable() {
-        return null;
+        StringBuilder myRange = new StringBuilder();
+
+        for (int i = 1; i <=5; i++){
+            for (int n = 1; n <= 5; n++) {
+
+                    myRange.append(String.format("%3d |", n * i));
+                }
+                myRange.append("\n");
+            }
+
+        return myRange.toString();
     }
 
+
+
     public static String getLargeMultiplicationTable() {
-        return null;
+        StringBuilder myRange = new StringBuilder();
+
+        for (int i = 1; i <=10; i++){
+            for (int n = 1; n <= 10; n++) {
+
+                myRange.append(String.format("%3d |", n * i));
+
+            }
+            myRange.append("\n");
+
+        }
+
+        return myRange.toString();
     }
 
     public static String getMultiplicationTable(int tableSize) {
-        return null;
+        StringBuilder myRange = new StringBuilder();
+
+        for (int i = 1; i <= tableSize; i++){
+            for (int n = 1; n <= tableSize; n++) {
+
+                myRange.append(String.format("%3d |", n * i));
+
+            }
+            myRange.append("\n");
+
+        }
+
+        return myRange.toString();
     }
 }
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..2e815a7 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 +3,44 @@
 public class TriangleUtilities {
 
     public static String getTriangle(int numberOfRows) {
-        return null;
+        StringBuilder myRange = new StringBuilder();
+        for (int i = 1; i < numberOfRows; i++){
+            for (int n = 1; n <= i; n++) {
+                myRange.append("*");
+            }
+            myRange.append("\n");
+        }
+        return myRange.toString();
     }
 
     public static String getRow(int numberOfStars) {
-        return null;
+        StringBuilder myRange = new StringBuilder();
+        for (int i = 0; i < numberOfStars; i++){
+            myRange.append("*");
+        }
+        return myRange.toString();
+
     }
 
     public static String getSmallTriangle() {
-        return null;
+        StringBuilder myRange = new StringBuilder();
+        for (int i = 1; i <= 4; i++){
+            for (int n = 1; n <= i; n++) {
+                myRange.append("*");
+            }
+            myRange.append("\n");
+        }
+        return myRange.toString();
     }
 
     public static String getLargeTriangle() {
-        return null;
+        StringBuilder myRange = new StringBuilder();
+        for (int i = 1; i < 10; i++){
+            for (int n = 1; n <= i; n++) {
+                myRange.append("*");
+            }
+            myRange.append("\n");
+        }
+        return myRange.toString();
     }
 }
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..2793098 100644
--- a/src/test/java/io/zipcoder/microlabs/mastering_loops/NumberUtilitiesTest.java
+++ b/src/test/java/io/zipcoder/microlabs/mastering_loops/NumberUtilitiesTest.java
@@ -65,10 +65,10 @@ public void testGetEvenNumbers() {
     @Test
     public void testGetOddNumbers() {
         // : Given
-        String expected = "681012141618";
+        String expected = "5791113151719";
         int start = 5;
         int stop = 20;
-        int step = 5;
+
 
         // : When
         String actual = NumberUtilities.getOddNumbers(start, stop);