7 if you only count the main ones(sorcerer's stone, chamber of secrets, prisoner of azkaban , goblet of fire, order of the phoenix, half blood prince, deathly hallows). But if you include the "companion" books, about 13
yes she did a little bit
she has writen Harry Potter books because they are interesting
As of now, J.K. Rowling has mentioned that she is unlikely to write more books in the Harry Potter series, as she feels she has completed the story. However, she has released additional material on the Wizarding World through the website Pottermore and the Fantastic Beasts movie series.
No. She will not write anymore Harry Potter book after Harry Potter and the Deathly Hallows.
Yes. Her name is on each of the Harry Potter books as the author.
Harry Potter books? No. Harry Potter Fanfiction? Heck yes. Fanfiction is basically the fans' way to write stories about HP, and some of them are as long as books.
Probably. Specifically about Harry Potter books, she formerly said she would not write any more books about Harry Potter. More recently, she said that she might.
No. J.K. Rowling has no plans to write any more books in the Harry Potter series.
No, The series of Harry Potter is finished.
Rowling will not write any more Books.
Harry Potter didn't write any books -- he is a fictional character, and not an intellectual one at that.
No.