How many books are there in the Harry Potter series?
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
6
6
6
5
6
5
6
5
6
5
6
5
6
5
6
5
6
5
8
6
5
8
6
5
8
6
5
8
6
5
8
6
5
8
6
5
8
6
5
8
6
5
8
6
5
8
6
5
8
5
8
4
5
8
4
8
4
8
4
8
4
17
8
4
17
8
142
4
17
7 books
14
2
8
10
4
17
142
67
14
2
8
7 books
10
4
17
14
142
2
67
10
7 volumes
7 books
9
4
17
7 of them
14
2
10
142
109
7 Books
9
67
4
17
7 -
7 volumes
7 books
14
11
2
7 of them
10
9
4
17
142
109
7 Books
67
14
11
2
7 volumes
7 books
7 -
10
9
4
17
7 of them
14
11
142
2
109
7 Books
67
10
62
7 volumes
7 books
9
4
17
7 -
14
11
2
7 
7 of them
10
142
109
25
7 Books
9
67
ten
4
17
3
62
7 volumes
71
7 books
14
11
2
7 -
10
25
9
4
17
142
109
3
155