How many books are in the Fifty Shades of Grey series?
3
3
5
3
5
3
5
3
4
5
3
4
5
3
4
5
2
3
4
5
2
3
4
5
2
3
4
5
2
3
4
5
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
1
6
2
3
4
7
5
1
6
2
3
4
7
5
1
6
2
3
4
7
5
1
6
2
3
4
7
5
1
6
2
3
4
7
5
1
6
2
3
4
7
5
1
8
6
2
3
4
7
5
1
8
6
2
4
7
1
8
6
2
4
7
1
8
9
6
2
4
7
1
8
9
6
2
7
1
8
9
6
10
2
7
1
8
9
6
10
2
11
7
1
8
9
6
10
11
13
7
1
8
9
6
10
12
11
13
7
1
8
9
6
10
12
11
13
7
1
8
9
6
10
12
11
13
7
8
9
6
10
12
11
13
7
8
9
6
10
12
11
13
7
8
9
6
10
12
11
13
7
8
9
10
3 books
4 books