How many studio albums has U2 released?
14
3
4
3
4
3
4
2
3
4
2
5
3
4
2
5
3
4
2
5
3
4
2
5
3
4
2
5
3
4
2
5
3
4
2
5
3
4
2
5
1
6
7
3
4
2
5
1
6
7
3
4
2
5
1
0
8
6
7
3
4
2
5
1
0
8
6
7
3
4
2
5
1
8
6
7
3
0
4
2
5
1
8
6
7
3
4
2
5
1
0
8
6
7
3
4
2
9
5
1
11
0
8
6
7
3
4
2
9
5
1
11
10
8
6
7
3
0
4
2
9
5
1
11
12
10
8
6
7
2
9
5
1
11
0
12
10
8
6
7
2
9
5
1
11
12
10
0
8
6
7
9
5
1
11
13
12
10
8
6
7
9
1
11
13
12
10
8
6
16
7
9
1
11
13
12
10
8
6
16
7
9
14
62
1
11
13
12
10
8
6
16
7
9
14
66
11
62
66
62
63