diff --git a/csharp-fundamentals-maps.Main/Core.cs b/csharp-fundamentals-maps.Main/Core.cs
index 8f4d84a..ea40321 100644
--- a/csharp-fundamentals-maps.Main/Core.cs
+++ b/csharp-fundamentals-maps.Main/Core.cs
@@ -49,8 +49,9 @@ in the createPerson method
         public string getValue(string key)
         {
             
-           
-            return string.Empty;
+           var dict = createPerson();
+
+            return dict.GetValueOrDefault(key);
 
 
         }
@@ -64,7 +65,9 @@ in the provided dictionary
          */
          public bool hasKey(Dictionary<string,string> dictionary, string isitthere)
          {
-            return false;
+            var keyExists = dictionary.TryGetValue(isitthere, out var key);
+
+            return keyExists;
             
          }
 
@@ -78,7 +81,12 @@ public bool hasKey(Dictionary<string,string> dictionary, string isitthere)
          */
         public int getValueOrDefault(Dictionary<string,int> dictionary, string isitthere)
         {
-            return 0;
+            var exists = dictionary.TryGetValue(isitthere, out var value);
+
+            if (exists)
+                return value;
+
+            return -1;
 
         }
 
@@ -105,7 +113,14 @@ public List<string> buildSecretPhrase(int[] numbers)
             map.Add(96, "nice");
             // Write your code below this comment...
 
-           
+            foreach (var key in numbers)
+            {
+                var value = map.GetValueOrDefault(key);
+
+                if (value == null) continue;
+
+                results.Add(value);
+            }
 
             //    // ...and above this comment
             return results;
diff --git a/csharp-fundamentals-maps.Main/Extension.cs b/csharp-fundamentals-maps.Main/Extension.cs
index 2deb96d..a03b8cb 100644
--- a/csharp-fundamentals-maps.Main/Extension.cs
+++ b/csharp-fundamentals-maps.Main/Extension.cs
@@ -16,7 +16,7 @@ public Extension()
             _planets = new Dictionary<string, float>();
             _planets.Add("Jupiter", 5.2f);
             _planets.Add("Uranus", 19.2f);
-            _planets.Add("Pluto", 39f);
+           // _planets.Add("Pluto", 39f);
             _planets.Add("Mercury", 0.39f);
             _planets.Add("Saturn", 9.54f);
             _planets.Add("Earth", 1f);
@@ -36,7 +36,9 @@ public Dictionary<string,int> LettersInName()
             //          the planet name and the number of letters in its name
             //          iterate the _planets using a foreach object to load the result dictionary.
 
-            
+            foreach (var planet in _planets) {
+                result.Add(planet.Key, planet.Key.Count());
+            }
 
             return result;
         }
@@ -52,7 +54,7 @@ public Dictionary<string,float> OrderedPlanets()
         }
         public Dictionary<string, float> OrderedPlanetsByDescending()
         {            
-            return _planets.OrderBy(x => x.Value).ToDictionary(x => x.Key, x => x.Value);
+            return _planets.OrderByDescending(x => x.Value).ToDictionary(x => x.Key, x => x.Value);
         }
         //TODO:  modify the OrderedPlanetsByDescending so it is not dictionary is not doing an OrderBy but OrderByDescending
 
@@ -67,7 +69,9 @@ public Dictionary<string, float> OrderedPlanetsByDescending()
 
         public string FurthestFromTheSun()
         {
-            return string.Empty;      
+            var dict = OrderedPlanetsByDescending();
+            var furthest = dict.Keys.FirstOrDefault();
+            return furthest;      
         }
         public string ClosestToTheSun()
         {