How many major rivers are there in Texas?
15
4
3
4
3
2
4
3
2
5
4
3
2
5
4
3
2
5
4
3
2
5
4
3
2
5
1
4
3
2
5
1
4
3
2
5
1
4
3
2
5
1
4
3
2
5
1
4
3
2
5
1
6
4
3
2
5
1
6
4
3
2
5
1
6
7
4
3
2
5
1
6
7
4
3
2
0
5
1
6
7
4
3
2
5
1
6
7
4
3
2
5
1
9
6
7
4
3
2
5
1
9
6
7
4
3
2
5
1
8
9
6
7
2
5
1
8
9
6
7
10
5
1
8
9
6
7
11
10
12
1
8
9
6
7
11
10
12
1
8
9
6
7
11
10
12
1
8
9
6
7
11
10
12
1
8
9
6
7
11
13
10
12
8
9
6
7
11
13
10
12
8
9
6
7
11
13
10
12
8
9
6
7
11
13
10
12
8
9
6
7
11
13
12
66
59
62
102
63
69
57