diff --git a/DBMS/SQL/Week5/writeup.md b/DBMS/SQL/Week5/writeup.md
index d00433b..e578dd7 100644
--- a/DBMS/SQL/Week5/writeup.md
+++ b/DBMS/SQL/Week5/writeup.md
@@ -411,6 +411,20 @@ DAA                                     2
 ```
 ### List the departments whose all course text books are published by a particular publisher.
 
+```sql
+SQL> select distinct dept
+  2  from course
+  3  where not exists(
+  4  select *
+  5  from text natural join book_adoption
+  6  where book_adoption.course# = course.course#
+  7  and publisher!='Pearson');
+
+DEPT
+------------------------------
+ICT
+```
+
 
 ### Find the students who have enrolled for course of more than one department
 
@@ -418,13 +432,119 @@ DAA                                     2
 
 ### List the department which adopts all the books from the particular publisher
 
+```sql
+SQL>  select distinct dept
+  2      from course natural join Book_Adoption
+  3      where book_isbn not in
+  4      (select book_isbn
+  5      from course natural join book_adoption join text using(book_isbn)
+
+  6      where publisher !='Pearson'
+  7      );
+
+DEPT
+------------------------------
+ICT
+
+SQL>   select distinct dept
+  2      from course
+  3      where not exists
+  4      (
+  5     select *
+  6     from book_adoption natural join text
+  7     where publisher !='Cengage'
+  8     and course.course# =book_adoption.course#
+  9      );
+
+DEPT
+------------------------------
+EVS
+CS
+```
+
 ### List the books which are adopted by the course as well as enrolled by the student
 
+```sql
+SQL> select booktitle
+  2  from text
+  3  where book_isbn in
+  4  (
+  5     select distinct book_isbn
+  6  from book_adoption join enroll using(book_isbn)
+  7  );
+
+BOOKTITLE
+--------------------
+DBMS vol 1
+DBMS vol 2
+DAA vol 2
+COA vol 666
+DSD vol 99
+Math vol 66
+Poetry vol 0
+
+7 rows selected.
+```
+
 ### List the courses which has adapted at least two books from a specific publisher
 
+```sql
+SQL> select course#,cname
+  2  from text natural join book_adoption join course using(course#)
+  3  where publisher='Pearson'
+  4  group by (course#,cname)
+  5  having count(book_isbn)>=2;
+
+   COURSE# CNAME
+---------- ------------------------------
+      1102 DAA
+```
+
 ### Identify the students who are enrolled for maximum number of books.
 
+```sql
+SQL> select regno,name,count(book_isbn)
+  2  from enroll natural join student
+  3  group by regno,name having count(book_isbn)>= all
+  4  (select count(book_isbn)
+  5  from enroll natural join student
+  6  group by regno);
+
+REGNO      NAME                 COUNT(BOOK_ISBN)
+---------- -------------------- ----------------
+456        Aadit                               2
+123        Ashwin                              2
+789        Shrikanth                           2
+```
+
 ### List the publishers along with the number of books published by them.
 
+```sql
+SQL> select publisher,count(book_isbn)
+  2  from (select * from text)
+  3  group by publisher;
+
+PUBLISHER            COUNT(BOOK_ISBN)
+-------------------- ----------------
+Penguin                             1
+Cengage                             2
+OML                                 1
+Pearson                             3
+Classmate                           1
+
+SQL>
+SQL> select publisher,count(book_isbn)
+  2  from text
+  3  group by publisher;
+
+PUBLISHER            COUNT(BOOK_ISBN)
+-------------------- ----------------
+Penguin                             1
+Cengage                             2
+OML                                 1
+Pearson                             3
+Classmate                           1
+```
+
 ### List the students who enrolled for all the books adopted by their course