| Hint | Answer | % Correct |
|---|---|---|
| A | Amazon, Amur, Amu Darya | 98%
|
| N | Nile, Niger, Nizhnyaya Tunguska | 97%
|
| Y | Yangtze, Yenisey, Yellow | 94%
|
| D | Danube, Dnieper, Don | 93%
|
| M | Mississippi, Mekong, Mackenzie | 92%
|
| C | Congo, Colorado, Columbia | 90%
|
| V | Volga, Vilyuy, Vitim | 83%
|
| G | Ganges, Guaviare, Godavari | 82%
|
| E | Euphrates, Elbe, Essequibo | 78%
|
| Z | Zambezi, Zeya | 76%
|
| I | Indus, Irrawaddy, Ishim | 70%
|
| O | Ob, Orange, Olenyok | 70%
|
| R | Río de la Plata, Rio Grande, Red | 70%
|
| B | Brahmaputra, Brazos, Blue Nile | 53%
|
| L | Lena, Limpopo, Liao | 50%
|
| U | Ural, Ubangi, Uruguay | 41%
|
| W | White Nile, Warburton, White | 34%
|
| P | Purús, Padma, Paraguay | 28%
|
| S | Shatt al-Arab, São Francisco, Syr Darya | 22%
|
| H | Han, Hai, Huallaga | 18%
|
| F | Fraser, Fimi, Fly | 12%
|
| T | Tocantins, Tapajós, Tarim | 12%
|
| X | Xingu | 10%
|
| J | Japurá, Juruá, Jubba | 7%
|
| K | Kolyma, Kasai, Khatanga | 6%
|