How many states do not share any borders with any other U.S. state?
2
2
2
1
2
3
1
2
5
4
3
1
2
5
4
3
1
2
5
4
3
1
2
5
0
4
3
1
2
5
4
3
0
1
2
5
4
3
1
2
0
5
4
3
1
2
5
0
4
3
1
2
5
4
3
0
1
2
6
5
4
3
1
2
0
6
5
7
4
3
1
2
6
5
0
7
4
3
1
2
6
5
7
4
3
0
1
2
6
5
7
4
3
1
2
6
5
7
4
3
1
2
8
6
5
7
4
9
3
1
2
8
6
5
7
4
9
3
1
11
8
6
5
7
4
9
3
1
11
8
6
10
5
7
4
9
3
11
8
6
10
5
7
4
9
13
11
12
8
6
10
7
9
13
11
12
8
6
10
7
9
13
11
12
8
6
10
7
9
13
11
12
8
6
10
7
No
9
13
11
12
8
6
10
7
No
9
13
11
12
8
6
10
7
No
66
ONE
66
ONE
66
62