| # | Population | Country | Answer | % Correct |
|---|---|---|---|---|
| 1 | 22,500,000 | Egypt | Cairo | 100%
|
| 2 | 4,975,000 | South Africa | Cape Town | 98%
|
| 4 | 3,825,000 | Venezuela | Caracas | 96%
|
| 3 | 4,775,000 | Morocco | Casablanca | 96%
|
| 8 | 1,460,000 | Canada | Calgary | 87%
|
| 6 | 2,950,000 | Colombia | Cali | 80%
|
| 20 | 503,402 | Australia | Canberra | 75%
|
| 5 | 3,250,000 | Brazil | Campinas | 60%
|
| 16 | 581,618 | United Kingdom | Cardiff | 56%
|
| 9 | 1,220,000 | Colombia | Cartagena | 55%
|
| 11 | 1,060,000 | Mexico | Cancún | 50%
|
| 17 | 550,000 | Angola | Cabinda | 30%
|
| 12 | 898,100 | Brazil | Campo Grande | 21%
|
| 9 | 1,220,000 | United States | Cape Coral | 18%
|
| 14 | 812,088 | Vietnam | Can Thơ | 14%
|
| 28 | 310,819 | Cuba | Camagüey | 12%
|
| 13 | 827,697 | Philippines | Cagayan de Oro | 7%
|
| 7 | 1,770,000 | China | Cangnan | 6%
|
| 15 | 759,403 | China | Cangzhou | 5%
|
| 18 | 540,000 | Nigeria | Calabar | 4%
|
| 23 | 394,490 | Brazil | Campina Grande | 4%
|
| 26 | 344,265 | Spain | Castellón - Vila-real | 4%
|
| 19 | 539,845 | Brazil | Caxias do Sul | 4%
|
| 22 | 397,182 | Brazil | Cabo Frio | 0%
|
| 21 | 464,700 | Brazil | Campos dos Goytacazes | 0%
|
| 25 | 344,383 | Brazil | Caraguatatuba - Ubatuba | 0%
|
| 24 | 378,048 | Brazil | Caruaru | 0%
|
| 27 | 317,100 | Brazil | Cascavel | 0%
|