How many countries have over 1 billion citizens?
1
2
2
2
2
2
2
2
3
2
3
2
3
2
3
2
1
3
2
1
3
2
1
3
2
5
1
3
2
5
1
3
2
5
1
3
2
4
5
1
3
2
4
5
1
3
2
4
5
1
3
2
4
5
1
3
2 countries
4
5
1
3
4
5
1
3
4
5
1
3
4
5
1
3
4
5
1
3
4
0
5
1
3 countries
3
2 countries
4
5
0
1
4 countries
4
5
1
0
4
5
1
4
7
0
5
6
1
4
7
5
6
0
10
8
4
7
5
2 countries
6
10
3 countries
0
8
4
7
5
6
10
4 countries
8
5 countries
4
7
0
6
10
8
4
7
6
0
10
2 countries
8
4
7
6
10
8
11
7
6 countries
6
10
9
8 countries
8
3 countries
11
7
2 countries
10 countries
6
10
7 countries
9
8
11
4 countries
7
6
10
9
13
2 nations
8
5 countries
11
7
6
10
9
13
8
2 countries
11
7
2 nations
3 countries
6
10
9
13
8
11
7
4 countries
14
6
2 nations
10
9
13
8
11
7