How many books were in the original pre-1999 Ender series?
4
3
3
3
3
5
3
4
5
3
4
2
5
3
4
2
5
3
4
2
5
3
4
2
5
3
4
2
5
3
4
2
5
1
3
4
2
5
1
6
3
4
7
2
5
1
6
3
4
7
2
5
1
6
3
4
7
2
5
1
6
3
4
7
2
5
1
6
3
4
0
7
2
5
1
6
3
4
7
2
5
1
6
3
4
7
2
5
1
6
3
4
8
7
2
5
1
6
4
8
7
2
5
1
6
9
4
8
7
2
5
1
6
9
4
8
7
2
5
1
6
9
4
8
7
2
1
6
9
11
8
7
2
1
6
9
11
10
13
8
7
1
6
9
11
10
13
8
7
12
1
6
9
11
10
13
8
7
12
1
6
9
11
10
13
8
7
12
1
6
9
11
10
13
8
7
12
1
6
9
11
10
13
8
7
12
6
9
11
10
13
8
7
12
66
102
132
144
116
117
111