How many Harry Potter books did J. K. Rowling write?
7
3
3
3
4
3
4
5
3
4
5
2
3
4
5
2
3
4
5
2
3
4
1
5
2
3
4
1
5
2
3
4
1
5
2
3
4
1
5
2
3
4
1
5
2
3
4
1
5
2
3
4
1
5
7
2
6
3
4
1
5
7
2
6
3
4
1
5
7
2
6
3
4
1
5
7
2
6
3
4
1
5
7
2
6
3
4
1
5
7
2
6
3
4
1
5
7
2
6
4
1
5
7
2
6
4
8
1
5
7
2
6
8
1
5
7
2
6
8
1
7
2
6
8
1
7
6
9
8
1
7
6
9
10
8
1
11
7
6
9
10
8
11
7
6
9
10
8
11
7
6
9
10
8
11
7
6
12
9
10
8
11
7
6
12
9
13
10
8
11
7
6
12
9
13
10
8
11
7
6
12
9
13
10
8
11
12
9
13
10
8
11
16
4 books
5 books
3 books
2 books
4 books
128
128
5 books