2. SELECT name 
   FROM Student;

3. SELECT room 
   FROM Course 
   WHERE name = 'CS 105';

4. SELECT AVG(capacity) 
   FROM Room;

   SELECT MIN(capacity) 
   FROM room;

   SELECT MAX(capacity) 
   FROM room;

5. SELECT name 
   FROM Room 
   WHERE capacity IN 
                   (SELECT MAX(capacity) 
                    FROM Room);