| Length | Answer | % Correct |
|---|---|---|
| 6575 | Amazon River | 100%
|
| 6650 | Nile River | 100%
|
| 5464 | Yellow River | 93%
|
| 6300 | Yangtze River | 87%
|
| 6275 | Mississippi | Missouri River | 83%
|
| 4700 | Congo | Chambeshi River | 73%
|
| 5410 | Ob | Irtysh River | 50%
|
| 5539 | Yenisei | Angara | Selenga River | 40%
|
| 4444 | Amur | Argun River | 33%
|
| 4880 | Rio De La Plata | 17%
|