diff --git a/lib/a_division_by_zero_error.rb b/lib/a_division_by_zero_error.rb
index fa27ef36..bbeda3d6 100644
--- a/lib/a_division_by_zero_error.rb
+++ b/lib/a_division_by_zero_error.rb
@@ -1,3 +1,3 @@
 42 / 6
 
-42 / 0
+42 / 7
diff --git a/lib/a_name_error.rb b/lib/a_name_error.rb
index bad266d9..fd012b53 100644
--- a/lib/a_name_error.rb
+++ b/lib/a_name_error.rb
@@ -1,3 +1,3 @@
-"hello world"
+hello_world = "hello world"
 
 hello_world
diff --git a/lib/a_syntax_error.rb b/lib/a_syntax_error.rb
index 5252c8f7..15692225 100644
--- a/lib/a_syntax_error.rb
+++ b/lib/a_syntax_error.rb
@@ -1,3 +1,3 @@
 x = 1
 
-x = 
+x = x + 1
diff --git a/lib/a_type_error.rb b/lib/a_type_error.rb
index 1217fd52..e01aadcb 100644
--- a/lib/a_type_error.rb
+++ b/lib/a_type_error.rb
@@ -1,3 +1,3 @@
 1 + 1
 
-1 + "is the loneliest number"
+"1 + is the loneliest number"
\ No newline at end of file