How many books are there in the main Harry Potter series?
7
5
5
5
3
4
5
3
4
5
3
4
5
3
4
5
3
4
5
7
3
4
5
7
3
4
5
7
3
6
4
5
7
3
6
4
5
7
3
6
4
5
7
3
2
6
4
5
7
3
2
6
4
5
7
3
2
6
4
5
7
3
2
6
4
5
7
3
2
6
4
8
5
7
3
2
6
4
8
5
7
3
2
6
4
1
8
5
7
3
2
6
4
1
8
7
3
9
2
6
4
1
8
7
3
9
2
6
4
1
8
7
9
11
2
6
1
8
7
9
11
10
2
6
1
8
7
9
11
10
2
6
1
8
7
9
11
10
2
6
1
8
7
9
12
11
10
2
6
1
8
9
12
11
10
2
6
1
8
13
9
12
11
10
2
6
1
8
13
9
12
11
10
2
16
1
8
13
9
12
11
10
2
16
1
8
13
9
12
11
10
2
16
4 books
7 books
3 books
5 books
112
4 books
112
128