How many books did the author of 20,000 Leagues Under the Sea write?
60
3
3
3
3
2
3
2
3
2
3
2
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
4
3
2
1
4
3
2
1
4
5
3
2
1
4
5
3
2
1
4
5
3
2
1
4
5
3
2
1
4
5
3
7
2
1
4
6
5
7
2
1
4
6
5
7
2
1
4
6
5
7
2
1
4
6
5
7
1
4
6
5
7
1
4
6
0
5
7
1
4
8
6
5
0
7
1
4
8
6
5
7
0
4
8
6
5
7
4
8
6
0
5
7
4
8
6
5
0
7
4
8
6
5
7
0
4
8
6
5
7
8
6
0
5
7
8
6
5
0
7
8
ten
6
7
0
8
6
9
ten
7
10
8
6
9
7
ten
10
8
6
9
7
10
8
ten
6
9
10
8
9
ten
11
10
8
9
11
ten
2 volumes
10
8
9
11
10
8
ten
9
11
2 volumes
14
10
8
9
13