How many singers has AC/DC had?
2
2
2
2
3
2
3
2
3
2
3
2
3
2
3
2
3
2
3
4
2
5
3
4
2
5
3
4
2
5
3
4
2
5
3
4
2
5
3
4
2
1
5
3
4
2
1
5
3
4
2
1
5
3
4
2
1
5
3
4
2
1
5
3
4
1
5
7
3
4
1
5
7
3
4
1
5
7
4
6
1
5
7
4
6
1
5
7
0
4
6
1
5
7
4
6
1
0
5
7
4
6
1
5
0
7
4
6
1
5
7
0
4
6
1
5
7
6
1
0
7
6
1
0
7
6
1
7
0
6
1
7
6
1
0
7
6
8
0
7
6
8
7
0
6
8
7
6
8
7
6
8
13
7
6
14
8
13
12
6
9
14
8
13
12
6
9
14
8
13
12
9
14
8
13
12
9
14
8
13
12
9
14
8
13
12
ten
24
9
14
8
13
12
10
24
ten
9
69
14
15
8