How many books about the witches are in the Discworld series?
6
3
3
3
3
4
3
5
4
2
3
5
4
2
3
5
4
2
3
1
5
4
2
3
1
5
4
2
3
1
5
4
2
3
1
5
4
2
3
1
5
4
2
3
1
5
4
2
3
1
5
4
2
3
1
6
5
4
2
3
1
6
5
4
2
3
1
6
7
5
4
2
3
1
6
7
5
4
2
3
1
6
7
5
4
2
3
1
6
7
5
4
2
1
6
7
5
4
2
1
6
7
5
4
2
1
6
7
5
4
2
1
6
7
5
2
1
6
7
8
1
6
7
8
1
6
7
8
6
7
8
9
6
7
8
9
6
7
8
9
10
6
7
8
9
10
13
11
6
7
8
9
10
13
11
6
7
8
9
10
13
11
6
7
8
12
9
10
13
11
7
8
12
9
10
13
11
7
8
12
9
10
13
11
8
12
9
10
13
11
8
12
9
10
13
11
8
4 books
3 books
4 books
2 books