diff --git a/TheGameExtreme.Android/Properties/AndroidManifest.xml b/TheGameExtreme.Android/Properties/AndroidManifest.xml
index bbd57a6..e90eb53 100644
--- a/TheGameExtreme.Android/Properties/AndroidManifest.xml
+++ b/TheGameExtreme.Android/Properties/AndroidManifest.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="11" android:versionName="4.1" package="com.uca.thegameextreme" android:installLocation="auto">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="12" android:versionName="4.2" package="com.uca.thegameextreme" android:installLocation="auto">
 	<uses-sdk android:minSdkVersion="21" android:targetSdkVersion="28" />
 	<application android:icon="@drawable/TrierImageB" android:label="OrderStacks"></application>
 	<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
diff --git a/TheGameExtreme.Android/Resources/Resource.designer.cs b/TheGameExtreme.Android/Resources/Resource.designer.cs
index 3e31455..27e2d81 100644
--- a/TheGameExtreme.Android/Resources/Resource.designer.cs
+++ b/TheGameExtreme.Android/Resources/Resource.designer.cs
@@ -1,11 +1,11 @@
 #pragma warning disable 1591
 //------------------------------------------------------------------------------
 // <auto-generated>
-//     Ce code a été généré par un outil.
-//     Version du runtime :4.0.30319.42000
+//     This code was generated by a tool.
+//     Runtime Version:4.0.30319.42000
 //
-//     Les modifications apportées à ce fichier peuvent provoquer un comportement incorrect et seront perdues si
-//     le code est régénéré.
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
 // </auto-generated>
 //------------------------------------------------------------------------------
 
diff --git a/TheGameExtreme/model/Fraction.cs b/TheGameExtreme/model/Fraction.cs
index f4e0ca4..16d1de3 100644
--- a/TheGameExtreme/model/Fraction.cs
+++ b/TheGameExtreme/model/Fraction.cs
@@ -15,13 +15,50 @@ namespace TheGameExtreme.model
 
         public bool isMultiple(Fraction fraction)
         {
-            if (Numerateur % fraction.Numerateur == 0)
+            if (fraction.Numerateur == 1)
             {
-                return true;
+                if (fraction.Denominateur != 1
+                    && fraction.Denominateur != Denominateur
+                    && Denominateur % fraction.Denominateur == 0)
+                {
+                    return true;
+                }
             }
-            if (Denominateur % fraction.Denominateur == 0)
+            else if (fraction.Denominateur == 1)
             {
-                return true;
+                if (fraction.Numerateur != 1
+                    && fraction.Numerateur != Numerateur
+                    && Numerateur % fraction.Numerateur == 0)
+                {
+                    return true;
+                }
+            }
+            else if (fraction.Numerateur == Numerateur)
+            {
+                if (fraction.Denominateur != Denominateur
+                    && Denominateur % fraction.Denominateur == 0)
+                {
+                    return true;
+                }
+            }
+            else if (fraction.Denominateur == Denominateur)
+            {
+                if (fraction.Numerateur != Numerateur
+                    && Numerateur % fraction.Numerateur == 0)
+                {
+                    return true;
+                }
+            }
+            else
+            {
+                if (Numerateur % fraction.Numerateur == 0)
+                {
+                    return true;
+                }
+                if (Denominateur % fraction.Denominateur == 0)
+                {
+                    return true;
+                }
             }
             return false;
         }
diff --git a/com.uca.thegameextreme-Signed.apk b/com.uca.thegameextreme-Signed.apk
index ae05f96..435a3f8 100644
Binary files a/com.uca.thegameextreme-Signed.apk and b/com.uca.thegameextreme-Signed.apk differ
diff --git a/com.uca.thegameextreme.apk b/com.uca.thegameextreme.apk
index 2508ee1..af716f0 100644
Binary files a/com.uca.thegameextreme.apk and b/com.uca.thegameextreme.apk differ