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..b4d49c3 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 +1,62 @@
 package io.zipcoder.microlabs.mastering_loops;
 
 
+import java.util.Arrays;
+
 public class NumberUtilities {
     public static String getEvenNumbers(int start, int stop) {
-        return null;
+        StringBuilder evenN = new StringBuilder();
+
+        for (int i = start; i < stop; i++) {
+            if ((i % 2) == 0) {
+                evenN.append(i);
+            }
+
+        }return evenN.toString();
     }
 
 
     public static String getOddNumbers(int start, int stop) {
-        return null;
-    }
+        StringBuilder newStringy = new StringBuilder();
 
+        for (int i = start; i < stop; i++) {
+            if ((i % 2) != 0) {
+                newStringy.append(i);
+            }
 
-    public static String getSquareNumbers(int start, int stop, int step) {
-        return null;
-    }
+        }return newStringy.toString();
+        }
+
+
+        public static String getSquareNumbers ( int start, int stop, int step){
+            StringBuilder newSt = new StringBuilder();
+
+            for (int i = start; i < stop; i += step) {
+                int squareD = (int) Math.pow(i, 2);
+                newSt.append(squareD);
+            }
+            return newSt.toString();
+        }
+
+
+        public static String getRange ( int start, int stop, int step){
+            StringBuilder newArr = new StringBuilder();
+
+            for (int i = start; i < stop; i += step) {
+                newArr.append(i);
+            }
+            return newArr.toString();
+        }
 
 
-    public static String getRange(int start, int stop, int step) {
-        return null;
-    }
 
+    public static String getExponentiationNumbers( int start, int stop, int step, int exponent){
+            StringBuilder expoS = new StringBuilder();
 
-    public static String getExponentiations(int start, int stop, int step, int exponent) {
-        return null;
+            for(int i = start; i < stop; i+= step){
+                int powerS = (int) Math.pow(i, exponent);
+                expoS.append(powerS);
+            }
+            return expoS.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..5cb7a02 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 +1,26 @@
 package io.zipcoder.microlabs.mastering_loops;
 
 public class TableUtilities {
+
     public static String getSmallMultiplicationTable() {
-        return null;
+        String table = getMultiplicationTable(5);
+        return table;
     }
 
     public static String getLargeMultiplicationTable() {
-        return null;
+        String largeTable = getMultiplicationTable(10);
+        return largeTable;
     }
 
     public static String getMultiplicationTable(int tableSize) {
-        return null;
+        StringBuilder newTable = new StringBuilder();
+
+        for (int i = 1; i <= tableSize; i++) {
+            for (int m = 1; m <= tableSize; m++) {
+                newTable.append((String.format("%3d |", i * m)) + "");
+            }
+            newTable.append("" + "\n");
+        }
+        return newTable.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..099d83b 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 +3,46 @@
 public class TriangleUtilities {
 
     public static String getTriangle(int numberOfRows) {
-        return null;
+        StringBuilder newTri = new StringBuilder();
+
+        for (int i = 1; i < numberOfRows; i++) {
+            for (int m = 0; m < i; m++) {
+                newTri.append("*");
+            }
+            newTri.append("\n");
+        }
+        return newTri.toString();
     }
 
     public static String getRow(int numberOfStars) {
-        return null;
+        String newRow = "";
+        for (int i = 0; i < numberOfStars; i++) {
+            newRow += "*";
+        }
+        return newRow;
     }
 
     public static String getSmallTriangle() {
-        return null;
+        StringBuilder smallTri = new StringBuilder();
+        for (int i = 1; i <= 4; i++) {
+            for (int m = 0; m < i; m++) {
+                smallTri.append("*");
+            }
+            smallTri.append("\n");
+        }
+        return smallTri.toString();
     }
 
-    public static String getLargeTriangle() {
-        return null;
+
+        public static String getLargeTriangle () {
+            StringBuilder largeTri = new StringBuilder();
+            for(int i = 1; i <= 9; i++){
+                for(int m = 0; m < i; m++){
+                    largeTri.append("*");
+                }
+                largeTri.append("\n");
+            }
+            return largeTri.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..5f7d783 100644
--- a/src/test/java/io/zipcoder/microlabs/mastering_loops/NumberUtilitiesTest.java
+++ b/src/test/java/io/zipcoder/microlabs/mastering_loops/NumberUtilitiesTest.java
@@ -36,22 +36,10 @@ public void testGetRange2() {
     }
 
 
-
-
-
-
-
-
-
-
-
-
-
-
     @Test
     public void testGetEvenNumbers() {
         // : Given
-        String expected = "5791113151719";
+        String expected = "681012141618";
         int start = 5;
         int stop = 20;
 
@@ -65,7 +53,7 @@ public void testGetEvenNumbers() {
     @Test
     public void testGetOddNumbers() {
         // : Given
-        String expected = "681012141618";
+        String expected = "5791113151719";
         int start = 5;
         int stop = 20;
         int step = 5;
@@ -78,7 +66,6 @@ public void testGetOddNumbers() {
     }
 
 
-
     @Test
     public void testGetSquareNumbers() {
         // : Given
@@ -105,7 +92,7 @@ public void testGetExponentiationNumbers() {
         int exponent = 2;
 
         // : When
-        String actual = NumberUtilities.getExponentiations(start, stop, step, exponent);
+        String actual = NumberUtilities.getExponentiationNumbers(start, stop, step, exponent);
 
         Assert.assertEquals(expected, actual);
     }