| Letter | Largest | Second largest | Third largest | % Correct |
|---|---|---|---|---|
| B | Beijing | Bangkok | Buenos Aires | 78%
|
| L | Lagos | Los Angeles | London | 76%
|
| M | Manila | Mumbai | Mexico City | 67%
|
| C | Cairo | Chengdu | Chennai | 63%
|
| K | Karachi | Kolkata | Kinshasa | 63%
|
| S | Shanghai | Seoul | Sao Paulo | 63%
|
| D | Delhi | Dhaka | Dallas | 59%
|
| H | Hangzhou | Ho Chi Minh City | Hyderabad | 59%
|
| A | Ahmedabad | Accra | Alexandria | 52%
|
| T | Tokyo | Tehran | Tianjin | 48%
|
| N | New York City | Nagoya | Nanjing | 46%
|
| F | Fuzhou | Faisalabad | Fortaleza | 39%
|
| P | Paris | Philadelphia | Pune | 39%
|
| E | Edmonton | Ezhou | Erbil | 37%
|
| O | Osaka | Orlando | Ouagadougou | 33%
|
| U | Ürümqi | Ulaanbaatar | Ufa | 33%
|
| W | Wuhan | Washington D.C | Wenzhou | 30%
|
| R* | Rio de Janeiro | Riyadh | Ruhr area | 24%
|
| G | Guangzhou | Guadalajara | Guiyang | 22%
|
| J | Jakarta | Johannesburg | Jinan | 17%
|
| I | Istanbul | Ibadan | Indore | 13%
|
| X | Xiamen | Xi'an | Xuzhou | 13%
|
| V | Vancouver | Vadodara | Vishakhapatnam | 11%
|
| Y | Yangon | Yaoundé | Yantai | 7%
|
| Z | Zhengzhou | Zibo | Zhuhai | 7%
|
| Q | Qingdao | Quito | Qinhuangdao | 4%
|