diff --git a/Problem1.sql b/Problem1.sql
new file mode 100644
index 0000000..065cd05
--- /dev/null
+++ b/Problem1.sql
@@ -0,0 +1,3 @@
+SELECT name, population, area
+FROM World
+WHERE area >= 3000000 OR population >= 25000000
\ No newline at end of file
diff --git a/Problem2.sql b/Problem2.sql
new file mode 100644
index 0000000..407d35c
--- /dev/null
+++ b/Problem2.sql
@@ -0,0 +1,14 @@
+CREATE FUNCTION getNthHighestSalary(N INT) RETURNS INT
+BEGIN
+
+DECLARE M INT;
+ SET M = N-1;
+
+   RETURN (
+       # Write your MySQL query statement below.
+       SELECT DISTINCT salary 
+       FROM Employee
+       ORDER BY salary DESC
+       LIMIT M, 1
+   );
+END
\ No newline at end of file
diff --git a/Problem3.sql b/Problem3.sql
new file mode 100644
index 0000000..bd55bf5
--- /dev/null
+++ b/Problem3.sql
@@ -0,0 +1,3 @@
+DELETE p1 FROM Person p1
+JOIN Person p2
+WHERE p1.id > p2.id AND p1.email = p2.email
\ No newline at end of file