| Einwohner | Antwort | Land | % Korrekt |
|---|---|---|---|
| 17.700.000 | Osaka | Japan | 93%
|
| 1.230.000 | Oslo | Norwegen | 88%
|
| 1.350.000 | Ottawa | Kanada | 88%
|
| 1.100.000 | Odessa | Ukraine | 60%
|
| 3.700.000 | Orlando | USA | 60%
|
| 1.200.000 | Oklahoma City | USA | 56%
|
| 1.160.000 | Omsk | Russland | 48%
|
| 1.090.000 | Ouagadougou | Burkina Faso | 45%
|
| 1.600.000 | Oran | Algerien | 34%
|
| 446.000 | Omaha | USA | 23%
|
| 550.000 | Orenburg | Russland | 11%
|
| 2.100.000 | Okayama | Japan | 8%
|
| 1.300.000 | Onitsha | Nigeria | 7%
|
| 740.000 | Oyo | Nigeria | 6%
|
| 450.000 | Oita | Japan | 4%
|
| 1.050.000 | Oshogbo | Nigeria | 3%
|
| 2.000.000 | Ordos | China | 2%
|
| 735.000 | Orumiyeh (auch Urmia Genannt) | Iran | 1%
|
| 680.000 | Osasco | Brasilien | 1%
|
| 480.000 | Okene | Nigeria | 0%
|