2a. Select*from students where(class="3A") and(no<=10) order by class,no;

2b. Select*from students where(name like "%Angela%") order by class,no;

2c. Select*from students where(class like"3%") and ( id not like "s07") order by class,no;

2d. Select * from students, marks where(students.id=marks.id) and(name like "Tsang Hoi Yan%") order by class,no;

2e. Select*from students,marks where(students.id=marks.id) and (students.class="3E") and (marks.subject="English") order by class,no;