| Length | River | % Correct |
|---|---|---|
| 3,395 | Yellow | 98%
|
| 3,917 | Yangtze | 91%
|
| 1,376 | Pearl-Zhujiang | 67%
|
| 2,705 | Mekong | 65%
|
| 2,763 | Amur-Argun | 49%
|
| 1,832 | Brahmaputra-Tsangpo | 23%
|
| 1,628 | Ganges-Hooghly-Padma | 23%
|
| 1,976 | Indus | 20%
|
| 3,364 | Ob-Irtysh | 19%
|
| 1,901 | Salween | 15%
|