How many countries start with the letter “O”?
1
5
5
5
5
5
2
0
5
2
3
0
5
2
3
1
0
5
2
3
1
4
5
2
0
3
8
1
4
5
2
3
8
1
0
6
10
4
9
5
7
2
3
8
1
6
10
4
0
9
5
7
2
3
8
1
6
10
4
9
5
14
7
2
0
13
3
8
1
6
10
4
9
5
14
7
2
13
3
8
1
0
6
10
4
9
5
14
7
2
11
ten
13
3
8
1
6
10
4
0
9
5
14
7
2
11
13
3
8
1
6
ten
10
4
9
5
14
7
2
0
11
13
3
8
1
6
10
4
9
ten
5
14
7
2
11
13
3
8
1
6
10
4
9
5
14
7
2
11
ten
13
3
8
1
6
10
4
9
15
5
14
7
2
11
13
3
8
1
6
ten
10
4
12
9
15
14
7
2
11
13
3
8
1
6
10
4
12
9
15
ten
14
7
2
11
13
3
8
1
6
10
4
12