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..fc5d786 100644
--- a/src/main/java/io/zipcoder/microlabs/mastering_loops/NumberUtilities.java
+++ b/src/main/java/io/zipcoder/microlabs/mastering_loops/NumberUtilities.java
@@ -2,27 +2,93 @@
 
 
 public class NumberUtilities {
+
     public static String getEvenNumbers(int start, int stop) {
-        return null;
-    }
 
 
-    public static String getOddNumbers(int start, int stop) {
-        return null;
+        String n = "";
+
+        for (int i = start; i <stop; i++) {
+
+
+            if (i % 2 == 0) {
+               n = n + i;
+            }
+
+        }
+
+        return n;
     }
 
 
+
+        public static String getOddNumbers(int start, int stop) {
+
+            String n = "";
+
+            for (int i = start; i <stop; i++) {
+
+
+                if (i % 2!= 0) {
+                    n = n + i;
+                }
+
+            }
+
+            return n;
+        }
+
+
+
+
     public static String getSquareNumbers(int start, int stop, int step) {
-        return null;
+
+        String n = "";
+
+
+
+        for (int i = start; i <stop; i+=step) {
+
+
+                n = n + (i*i);
+            }
+
+
+
+        return n;
+
+
     }
 
 
     public static String getRange(int start, int stop, int step) {
-        return null;
+
+        String n = "";
+
+        for (int i = start; i <stop; i+=step){
+
+            n = n + i;
+        }
+
+        return n;
     }
 
 
     public static String getExponentiations(int start, int stop, int step, int exponent) {
-        return null;
+
+        String n = "";
+
+        for (int i = start; i <stop; i+=step){
+
+          int x = (int)Math.pow(i, exponent);
+          n += String.valueOf(x);
+
+        }
+
+
+
+
+
+        return n;
     }
 }
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..246ad79 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 +2,52 @@
 
 public class TableUtilities {
     public static String getSmallMultiplicationTable() {
-        return null;
+        StringBuilder smt = new StringBuilder();
+
+        for (int i = 1; i <= 5; i++) {
+            for (int j = 1; j <= 5; j++) {
+
+                int num = i * j;
+
+                smt.append(String.format("%3d |", num));
+
+            }
+            smt.append("\n");
+
+        }
+        String myTable = smt.toString();
+        return myTable;
     }
 
     public static String getLargeMultiplicationTable() {
-        return null;
+
+        StringBuilder theString = new StringBuilder();
+
+        for (int i = 1; i<11; i++) {
+
+            for (int j = 1; j<11; j++) {
+
+                theString.append(String.format("%3d |", i * j));
+            }
+            theString.append("\n");
+        }
+        return theString.toString();
     }
 
+
     public static String getMultiplicationTable(int tableSize) {
-        return null;
+
+        StringBuilder theString = new StringBuilder();
+
+        for (int i = 1; i <= tableSize; i++) {
+
+            for (int j = 1; j <= tableSize; j++) {
+
+                theString.append(String.format("%3d |", i * j));
+            }
+            theString.append("\n");
+        }
+        return theString.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..6b08136 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 +3,78 @@
 public class TriangleUtilities {
 
     public static String getTriangle(int numberOfRows) {
-        return null;
+
+        StringBuilder outcome = new StringBuilder();
+
+
+        for (int i=1; i < numberOfRows; i++) {
+
+            for (int j=0; j < i; j++){
+
+                outcome.append("*");
+            }
+                outcome.append("\n");
+
+            }
+
+
+            return outcome.toString();
     }
 
     public static String getRow(int numberOfStars) {
-        return null;
+
+        StringBuilder outcome = new StringBuilder();
+
+
+        for (int i=0; i < numberOfStars; i++){
+
+            outcome.append("*");
+
+        }
+
+
+        return outcome.toString();
     }
 
     public static String getSmallTriangle() {
-        return null;
+        StringBuilder outcome = new StringBuilder();
+
+
+        for (int i=1; i <=4; i++) {
+
+            for (int j=0; j < i; j++){
+
+                outcome.append("*");
+            }
+            outcome.append("\n");
+
+        }
+
+
+        return outcome.toString();
+
+
+
     }
 
     public static String getLargeTriangle() {
-        return null;
+
+        StringBuilder outcome = new StringBuilder();
+
+
+        for (int i=1; i <=9; i++) {
+
+            for (int j=0; j < i; j++){
+
+                outcome.append("*");
+            }
+            outcome.append("\n");
+
+        }
+
+
+        return outcome.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..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;