How many rivers in the world are longer than the Mississippi River?
3
1
2
1
3
2
1
3
4
2
1
3
4
5
2
1
3
4
5
2
1
3
4
5
2
1
3
4
5
2
1
3
4
5
2
1
3
4
5
2
1
3
4
5
2
1
6
3
4
5
2
1
6
3
0
4
5
2
1
7
6
3
4
5
0
2
1
7
6
3
4
5
2
0
1
7
6
3
4
5
2
1
7
6
3
0
4
5
9
2
1
7
6
3
4
5
9
2
1
7
6
3
4
5
9
2
1
8
7
6
3
4
5
9
2
1
8
7
6
3
4
5
9
2
8
7
6
3
10
4
5
9
8
7
11
6
10
4
5
9
12
8
7
11
6
10
5
9
12
8
7
11
6
10
9
12
13
8
7
11
6
10
9
12
13
8
7
11
6
10
9
12
13
8
7
11
6
10
9
14
12
13
8
7
11
6
10
9
14
12
13
8
7
11
66
66
ONE
102
144
123
111