How many singers has AC/DC had?
2
3
3
4
3
4
3
2
4
3
2
4
3
5
2
4
3
5
2
4
3
5
2
4
3
5
2
4
3
5
2
4
3
5
2
4
3
5
2
4
3
5
2
4
3
5
6
2
4
3
5
1
6
2
4
3
5
1
6
2
4
3
5
1
6
2
4
3
5
1
6
2
4
3
5
1
6
2
4
7
3
5
1
6
2
4
7
5
1
0
6
2
4
7
5
1
0
6
2
7
5
1
6
2
7
5
0
1
6
7
5
1
0
6
7
1
8
6
7
1
8
6
7
1
8
6
7
1
8
6
7
1
8
6
7
9
1
8
6
7
9
1
8
6
7
9
1
8
6
7
9
1
11
8
10
7
9
13
11
8
10
7
9
12
13
11
8
10
7
9
12
13
11
8
10
7
9
12
13
11
8
10
7
9
12
13
11
8
10
9
12
13
11
8
10
66
66
62
66
62
61