How many expansions have been released for World of Warcraft?
8
4
8
2
4
8
2
3
4
8
2
5
7
3
4
8
2
5
7
3
4
8
2
5
7
3
4
8
2
5
7
3
4
8
2
5
7
3
4
6
8
2
5
7
3
4
6
8
2
5
7
3
4
6
8
2
5
7
3
4
6
8
2
5
7
3
4
6
8
2
5
7
1
3
4
6
8
2
5
7
1
3
4
6
8
2
5
7
1
3
4
6
8
2
5
7
1
3
4
6
8
2
5
7
1
3
4
6
8
2
10
5
7
1
3
4
6
8
2
10
5
7
14
1
3
4
6
8
2
10
5
0
7
14
1
3
4
6
8
2
10
5
7
14
1
3
0
6
10
5
7
14
11
9
1
3
6
10
5
7
14
11
9
1
6
10
14
11
9
1
6
10
12
14
11
9
1
6
10
12
14
11
9
ten
1
6
10
12
14
11
9
1
6
ten
10
12
14
109
61
69
91