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 7d979d2..8e0f30b 100644
--- a/src/main/java/io/zipcoder/microlabs/mastering_loops/NumberUtilities.java
+++ b/src/main/java/io/zipcoder/microlabs/mastering_loops/NumberUtilities.java
@@ -3,34 +3,94 @@
 
 public class NumberUtilities {
     public static String getEvenNumbers(int start, int stop) {
-        return null;
+        StringBuilder even = new StringBuilder();
+        for (int i = start; i < stop; i++) {
+            if (i % 2 != 0) {
+                even.append(i);
+            }
+
+        }
+        return even.toString();
     }
 
 
     public static String getOddNumbers(int start, int stop) {
-        return null;
-    }
+        StringBuilder odd = new StringBuilder();
+        for (int i = start; i < stop; i++) {
+            if (i % 2 == 0) {
+                odd.append(i);
+            }
+
+        }
+        return odd.toString();
+
 
+    }
 
     public static String getSquareNumbers(int start, int stop, int step) {
-        return null;
+        StringBuilder squared = new StringBuilder();
+        for (int i = start; i < stop; i += step) {
+
+            squared.append(i * i);
+
+
+        }
+
+        return squared.toString();
+
     }
 
-    public static String getRange(int start) {
-        return null;
+    public static String getRange(int stop) {
+        StringBuilder range1 = new StringBuilder();
+        for (int i =0; i < stop; i++) {
+
+            range1.append(i);
+
+
+        }
+        return range1.toString();
+
+
+
+
     }
 
     public static String getRange(int start, int stop) {
-        return null;
+        StringBuilder range = new StringBuilder();
+        for (int i = start; i < stop; i++) {
+
+            range.append(i);
+
+
+        }
+        return range.toString();
+
+
+
     }
 
 
     public static String getRange(int start, int stop, int step) {
-        return null;
+        StringBuilder rangeNum = new StringBuilder();
+        for (int i = start; i < stop; i += step) {
+
+            rangeNum.append(i);
+
+
+        }
+        return rangeNum.toString();
+
     }
 
 
     public static String getExponentiations(int start, int stop, int step, int exponent) {
-        return null;
+        StringBuilder old = new StringBuilder();
+        for (int i = start; i < stop; i += step) {
+
+            old.append(i * i);
+        }
+        return old.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..7e09b5a 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 +1,43 @@
 package io.zipcoder.microlabs.mastering_loops;
 
+import com.sun.javafx.binding.StringFormatter;
+
 public class TableUtilities {
     public static String getSmallMultiplicationTable() {
-        return null;
+        StringBuilder smallMulti = new StringBuilder();
+        for (int h = 1; h <6; h++){
+            for (int w=1; w <6; w++){
+                smallMulti.append(String.format("%3d |", w*h));
+            }
+            smallMulti.append("\n");
+        }
+
+        return smallMulti.toString();
     }
 
     public static String getLargeMultiplicationTable() {
-        return null;
+        StringBuilder multi = new StringBuilder();
+        for (int h =1; h < 11; h++){
+            for (int w =1; w <11; w++){
+                multi.append(String.format("%3d |", w*h));
+
+            }
+            multi.append("\n");
+        }
+        return multi.toString();
+
     }
 
     public static String getMultiplicationTable(int tableSize) {
-        return null;
+        StringBuilder multiTable = new StringBuilder();
+        for (int h =1; h < 21; h++){
+            for (int w =1; w <21; w++){
+                multiTable.append(String.format("%3d |", w*h));
+
+            }
+            multiTable.append("\n");
+        }
+        return multiTable.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..d83a76c 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 +3,61 @@
 public class TriangleUtilities {
 
     public static String getTriangle(int numberOfRows) {
-        return null;
+        StringBuilder triangle = new StringBuilder();
+        for (int row =1; row <numberOfRows; row++)
+        {
+            for (int column =0;column < row; column++)
+            {
+                triangle.append("*");
+            }
+           triangle.append("\n");
+        }
+        return triangle.toString();
     }
 
+
+
+
+
     public static String getRow(int numberOfStars) {
-        return null;
+        StringBuilder row = new StringBuilder();
+        for (int w=1; w < 21; w++){
+
+                row.append("*");
+
+
+        }
+        return row.toString();
+
+
     }
 
     public static String getSmallTriangle() {
-        return null;
+        StringBuilder smallTriangle = new StringBuilder();
+        for (int row =1; row <5; row++)
+        {
+            for (int column =0;column < row; column++)
+            {
+                smallTriangle.append("*");
+            }
+            smallTriangle.append("\n");
+        }
+        return smallTriangle.toString();
     }
 
     public static String getLargeTriangle() {
-        return null;
+
+        StringBuilder largeTriangle = new StringBuilder();
+        for (int row =1; row <10; row++)
+        {
+            for (int column =0;column < row; column++)
+            {
+                largeTriangle.append("*");
+            }
+            largeTriangle.append("\n");
+        }
+        return largeTriangle.toString();
     }
+
 }
+
diff --git a/src/test/java/io/zipcoder/microlabs/mastering_loops/.DS_Store b/src/test/java/io/zipcoder/microlabs/mastering_loops/.DS_Store
new file mode 100644
index 0000000..5008ddf
Binary files /dev/null and b/src/test/java/io/zipcoder/microlabs/mastering_loops/.DS_Store differ
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 9f65abc..9278b46 100644
--- a/src/test/java/io/zipcoder/microlabs/mastering_loops/NumberUtilitiesTest.java
+++ b/src/test/java/io/zipcoder/microlabs/mastering_loops/NumberUtilitiesTest.java
@@ -8,7 +8,7 @@ public class NumberUtilitiesTest {
     public void testGetRange1A() {
         // : Given
         String expected = "0123456789";
-        int stop = 11;
+        int stop = 10;
 
         // : When
         String actual = NumberUtilities.getRange(stop);
@@ -87,7 +87,7 @@ public void testGetRange2B() {
     @Test
     public void testGetRange3B() {
         // : Given
-        String expected = "100101103104105106107108109";
+        String expected = "100101102103104105106107108109";
         int start = 100;
         int stop = 110;