diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 0000000..c57d089
Binary files /dev/null and b/.DS_Store differ
diff --git a/answers/exercise10.sql b/answers/exercise10.sql
index e69de29..469618b 100644
--- a/answers/exercise10.sql
+++ b/answers/exercise10.sql
@@ -0,0 +1 @@
+SELECT PostalCode AS Zip FROM Students;
\ No newline at end of file
diff --git a/answers/exercise11.sql b/answers/exercise11.sql
index e69de29..156ca60 100644
--- a/answers/exercise11.sql
+++ b/answers/exercise11.sql
@@ -0,0 +1 @@
+SELECT * FROM Students AS Learners;
\ No newline at end of file
diff --git a/answers/exercise2.sql b/answers/exercise2.sql
index e69de29..ccc321a 100644
--- a/answers/exercise2.sql
+++ b/answers/exercise2.sql
@@ -0,0 +1 @@
+SELECT * FROM Students WHERE City LIKE '[acs]%';
\ No newline at end of file
diff --git a/answers/exercise3.sql b/answers/exercise3.sql
index e69de29..b89d949 100644
--- a/answers/exercise3.sql
+++ b/answers/exercise3.sql
@@ -0,0 +1 @@
+SELECT * FROM Students WHERE City LIKE '[a-f]%';
\ No newline at end of file
diff --git a/answers/exercise4.sql b/answers/exercise4.sql
index e69de29..42475c1 100644
--- a/answers/exercise4.sql
+++ b/answers/exercise4.sql
@@ -0,0 +1 @@
+SELECT * FROM Students WHERE City LIKE '[!acf]%';
\ No newline at end of file
diff --git a/answers/exercise5.sql b/answers/exercise5.sql
index e69de29..3a32785 100644
--- a/answers/exercise5.sql
+++ b/answers/exercise5.sql
@@ -0,0 +1 @@
+SELECT * FROM Students WHERE City IN ("Sint Maarten", "Haiti");
\ No newline at end of file
diff --git a/answers/exercise6.sql b/answers/exercise6.sql
index e69de29..2fac943 100644
--- a/answers/exercise6.sql
+++ b/answers/exercise6.sql
@@ -0,0 +1 @@
+SELECT * FROM Students WHERE City NOT IN ("Sint Maarten", "Haiti");
\ No newline at end of file
diff --git a/answers/exercise7.sql b/answers/exercise7.sql
index e69de29..1873626 100644
--- a/answers/exercise7.sql
+++ b/answers/exercise7.sql
@@ -0,0 +1 @@
+SELECT * FROM Courses WHERE CreditHours BETWEEN 10 AND 20;
\ No newline at end of file
diff --git a/answers/exercise8.sql b/answers/exercise8.sql
index e69de29..dcdd679 100644
--- a/answers/exercise8.sql
+++ b/answers/exercise8.sql
@@ -0,0 +1 @@
+SELECT * FROM Courses WHERE CreditHours NOT BETWEEN 10 AND 20;
\ No newline at end of file
diff --git a/answers/exercise9.sql b/answers/exercise9.sql
index e69de29..74343a1 100644
--- a/answers/exercise9.sql
+++ b/answers/exercise9.sql
@@ -0,0 +1 @@
+SELECT * FROM Courses WHERE CourseName BETWEEN 'ColdFusion' AND 'Python' ORDER BY CourseName;
\ No newline at end of file