How many major rivers are there in Texas?
15
2
2
3
2
3
2
4
3
2
4
3
2
4
3
2
4
5
3
2
1
4
5
3
2
1
4
5
3
2
1
4
5
3
2
6
1
4
5
3
2
6
1
4
5
3
2
6
1
4
7
5
3
2
6
1
4
7
5
3
2
6
1
4
7
5
3
2
6
1
4
7
5
3
2
6
1
4
7
8
5
3
2
6
1
4
7
8
5
3
2
6
1
4
7
8
5
3
2
6
1
4
7
8
5
0
3
6
1
4
7
9
8
5
3
0
6
1
4
7
9
8
5
6
10
1
4
7
9
8
5
6
10
1
7
9
12
8
5
13
6
10
1
7
9
12
8
5
13
6
10
1
7
9
12
8
5
13
11
6
10
1
7
9
12
8
13
11
6
10
7
9
12
8
13
14
11
6
10
7
9
12
8
13
14
11
6
10
7
9
12
8
13
ten
14
11
10
7
ten
62
62