How many major mountain ranges are there in the United States?
3
3
3
5
3
4
5
3
4
5
3
4
5
3
4
5
3
4
5
3
4
5
3
4
5
2
3
4
5
2
3
4
5
2
3
4
6
5
2
3
4
6
5
2
3
4
6
5
2
3
4
6
5
2
3
4
6
5
2
3
4
7
6
5
2
3
4
7
6
1
5
2
3
4
7
6
1
5
2
3
4
7
6
1
5
2
4
7
6
1
5
2
4
7
6
1
8
2
7
6
1
8
2
7
9
6
1
8
2
7
9
6
1
8
2
7
9
6
1
8
2
7
9
10
6
1
8
2
7
9
10
6
1
8
2
7
9
10
6
1
8
7
9
10
6
1
8
7
9
10
6
11
1
8
12
7
9
10
11
1
8
12
7
9
10
13
11
1
8
12
7
9
10
13
11
1
8
12
7
9
10
13
11
1
8
12
7
9
10
13
11
1
8
12
9
10
13
5 Mountains
4 mountains
5 Mountains
4 mountains