| Population | Letter | Country | % Correct |
|---|---|---|---|
| 23,200,000 | M | Mumbai | 74%
|
| 17,100,000 | L | Lagos | 60%
|
| 13,700,000 | T | Tehran | 57%
|
| 10,000,000 | C | Chennai | 54%
|
| 17,600,000 | D | Dhaka | 51%
|
| 16,000,000 | K | Kolkata | 51%
|
| 24,400,000 | S | Seoul | 49%
|
| 6,650,000 | X | Xi'an | 49%
|
| 16,900,000 | B | Bangkok | 46%
|
| 13,400,000 | J | Johannesburg | 43%
|
| 6,700,000 | R | Riyadh | 40%
|
| 10,400,000 | N | Nagoya | 37%
|
| 1,300,000 | U | Ulaan Baatar | 37%
|
| 8,000,000 | W | Wuhan | 34%
|
| 4,975,000 | G | Guadalajara | 31%
|
| 2,555,000 | Q | Quito | 31%
|
| 5,500,000 | A | Atlanta | 29%
|
| 8,300,000 | H | Hangzhou | 26%
|
| 3,075,000 | O | Orlando | 26%
|
| 7,300,000 | P | Philadelphia | 26%
|
| 2,150,000 | V | Vienna | 26%
|
| 1,020,000 | E | El Paso | 17%
|
| 3,925,000 | F | Fuzhou | 17%
|
| 3,325,000 | Z | Zibo | 17%
|
| 2,275,000 | Y | Yaounde | 14%
|
| 3,150,000 | I | Ibadan | 9%
|