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..eececfb 100644
--- a/src/main/java/io/zipcoder/microlabs/mastering_loops/NumberUtilities.java
+++ b/src/main/java/io/zipcoder/microlabs/mastering_loops/NumberUtilities.java
@@ -3,26 +3,60 @@
 
 public class NumberUtilities {
     public static String getEvenNumbers(int start, int stop) {
-        return null;
+        String even = "";
+        for (int x = start; x <= stop; x++) {
+            if (x % 2 == 0) {
+                even += Integer.toString(x);
+            }
+        }
+        return even;
     }
 
 
     public static String getOddNumbers(int start, int stop) {
-        return null;
+        String odd = "";
+        for (int x = start; x <= stop; x++) {
+            if (x % 2 != 0) {
+                odd += Integer.toString(x);
+            }
+        }
+        return odd;
     }
 
 
+
     public static String getSquareNumbers(int start, int stop, int step) {
-        return null;
+
+        StringBuilder square = new StringBuilder();
+        for (int i = start; i < stop; i += step) {
+            int squaredNum = (int) Math.pow(i, 2);
+            square.append(squaredNum);
+        }
+        return square.toString();
     }
+        public static String getRange ( int start, int stop, int step){
 
+            StringBuilder range = new StringBuilder();
 
-    public static String getRange(int start, int stop, int step) {
-        return null;
-    }
+            for (int i = start; i < stop; i += step) {
 
+                range.append(i);
+            }
+            return range.toString();
+        }
 
-    public static String getExponentiations(int start, int stop, int step, int exponent) {
-        return null;
-    }
-}
+
+        public static String getExponentiations ( int start, int stop, int step, int exponent){
+            StringBuilder expon = new StringBuilder();
+
+            for (int i = start; i < stop; i+= step) {
+
+                int exponVar = exponent;
+
+                int startExpon = (int) Math.pow(i, exponVar);
+
+                expon.append(startExpon);
+            }
+            return expon.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..de35b47 100644
--- a/src/main/java/io/zipcoder/microlabs/mastering_loops/TableUtilities.java
+++ b/src/main/java/io/zipcoder/microlabs/mastering_loops/TableUtilities.java
@@ -2,14 +2,43 @@
 
 public class TableUtilities {
     public static String getSmallMultiplicationTable() {
-        return null;
+
+        StringBuilder matrix = new StringBuilder();
+
+        for (int row = 1; row <= 5; row++) {
+            for (int column = 1; column <= 5; column++) {
+                matrix.append(String.format("%3d |", row * column));
+            }
+            matrix.append("\n");
+        }
+
+        return matrix.toString();
     }
 
     public static String getLargeMultiplicationTable() {
-        return null;
+
+        StringBuilder matrix = new StringBuilder();
+
+        for (int row = 1; row <= 10; row++) {
+            for (int column = 1; column <= 10; column++) {
+                matrix.append(String.format("%3d |", row * column));
+            }
+            matrix.append("\n");
+        }
+
+        return matrix.toString();
     }
 
     public static String getMultiplicationTable(int tableSize) {
-        return null;
+        StringBuilder matrix = new StringBuilder();
+
+        for (int row = 1; row <= 20; row++) {
+            for (int column = 1; column <= 20; column++) {
+                matrix.append(String.format("%3d |", row * column));
+            }
+            matrix.append("\n");
+        }
+
+        return matrix.toString();
     }
-}
+}
\ No newline at end of file
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..a7cc604 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 +3,51 @@
 public class TriangleUtilities {
 
     public static String getTriangle(int numberOfRows) {
-        return null;
+
+        String triangle = "";
+        for(int i=1; i <numberOfRows; i++)
+        {
+            for(int j=0; j < i; j++){
+                triangle+= "*";
+            }triangle+= "\n";
+
+        }
+        return triangle;
     }
 
     public static String getRow(int numberOfStars) {
-        return null;
-    }
+
+            String output = "";
+            for (int i = 0; i < numberOfStars; i++) {
+                output += "*";
+            }
+            return output;
+        }
+
 
     public static String getSmallTriangle() {
-        return null;
+
+        String triangle = "";
+        for(int i=1; i <=4; i++)
+        {
+            for(int j=0; j < i; j++){
+                triangle+= "*";
+            }triangle+= "\n";
+
+        }
+        return triangle;
+
     }
 
     public static String getLargeTriangle() {
-        return null;
+        String triangle = "";
+        for(int i=1; i <=9; i++)
+        {
+            for(int j=0; j < i; j++){
+                triangle+= "*";
+            }triangle+= "\n";
+
+        }
+        return triangle;
     }
 }
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..fc4540f 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 = "68101214161820";
         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;