How many houses are in Hogwarts in the Harry Potter books?
4
3
4
3
4
3
4
3
4
5
3
4
5
3
4
5
2
3
4
5
2
3
4
5
2
3
4
6
5
2
3
4
6
5
2
3
4
6
5
2
3
4
6
5
2
3
4
6
7
5
2
3
4
6
7
5
2
3
4
6
7
5
2
3
4
6
7
5
2
8
3
4
6
7
5
2
8
3
4
6
1
7
5
2
8
3
4
6
1
7
5
2
8
3
4
6
1
7
5
2
8
6
1
7
5
2
8
6
1
7
5
2
8
6
1
7
5
2
8
9
6
1
7
10
2
8
9
6
1
7
10
2
8
9
6
1
7
10
8
9
6
1
7
13
10
12
8
9
6
1
7
11
13
10
12
8
9
1
7
11
13
10
12
16
8
9
1
7
11
13
10
12
16
8
9
1
7
11
13
10
12
16
8
9
1
7
11
13
10
12
16
8
9
1
11
4 houses
4 houses
6 houses
2 houses
5 houses
4 houses