How many Harry Potter books were written?
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
5
5
6
5
6
5
6
5
6
5
6
5
6
5
6
5
6
8
5
6
8
5
6
8
5
2
6
8
5
2
6
8
4
5
2
6
8
4
5
2
6
8
4
5
2
6
8
4
5
2
6
8
4
5
3
2
6
8
4
5
3
2
6
8
4
5
3
10
2
9
6
8
4
3
10
2
9
6
14
8
4
3
10
2
9
14
8
4
3
10
2
11
9
14
8
4
3
10
2
11
9
7 of them
14
8
4
3
10
7 books
2
11
9
14
8
4
17
3
7 of them
10
1
2
11
9
7 books
14
8
4
17
3
10
1
2
11
9
7 of them
14
8
4
7 books
17
3
10
1
2
11
9
14
8
4
17
3
7 of them
10
7 books
1
2
11
9
14
7 Books
4
17
3
10
1
7 Harry Potter
2
11
9
7 books
7 of them
14
4
17
7 Books
3
10
1
2
11
9