How many U.S. states have a population of at least 20 million?
4
2
2
2
2
5
2
3
5
2
3
5
2
4
3
5
2
4
1
3
5
2
4
1
3
5
2
4
1
3
5
2
4
1
3
5
2
4
1
3
5
2
4
1
3
5
2
4
1
3
5
2
4
1
3
7
5
2
4
1
3
7
10
5
2
6
4
1
3
7
10
5
2
6
4
1
3
7
10
5
2
6
4
1
3
7
10
5
2
6
4
1
3
7
13
10
5
6
4
8
1
3
7
13
10
5
6
4
8
1
3
7
13
10
5
6
11
4
8
1
3
7
13
10
5
9
6
11
4
8
1
3
7
13
10
9
6
11
4
8
1
7
13
10
9
6
11
4
8
1
7
13
10
9
6
11
8
1
7
12
13
10
9
6
11
8
7
12
13
10
20
9
6
11
8
7
12
13
10
20
9
6
11
8
No
7
12
13
10
20
9
6
11
8
No
7
12
13
10
20
No