How many Fifty Shades of Grey books are there?
5
5
3
5
3
5
3
4
2
5
3
4
2
5
3
4
2
5
3
4
1
2
5
3
4
1
2
5
3
4
1
2
5
3
4
1
2
5
3
4
1
2
5
3
4
1
2
6
5
3
4
1
2
6
5
3
4
1
2
7
0
6
5
3
4
1
2
7
6
5
3
4
1
2
7
6
5
3
4
1
2
7
6
5
3
4
1
2
7
6
5
3
4
1
2
7
8
6
5
3
4
1
2
7
8
6
5
3
4
1
2
7
8
6
4
1
2
7
9
8
6
4
1
2
7
9
8
6
1
10
7
9
8
6
1
10
7
9
8
6
1
10
7
13
9
8
6
10
11
7
13
9
8
12
6
10
11
7
13
9
8
12
6
10
11
7
13
9
8
12
6
10
11
7
13
9
8
12
6
10
11
7
13
9
8
12
6
10
11
7
13
9
8
12
14
10
66
62
59
57
58