| Letter | Population | Country | % Correct |
|---|---|---|---|
| C | 1,368,860,000 | China | 99%
|
| I | 1,268,610,000 | India | 97%
|
| B | 204,052,000 | Brazil | 96%
|
| U | 320,643,000 | United States | 96%
|
| F | 66,104,000 | France | 95%
|
| R | 146,267,288 | Russia | 94%
|
| G | 80,925,000 | Germany | 93%
|
| Y | 25,956,000 | Yemen | 93%
|
| O | 4,155,885 | Oman | 92%
|
| Q | 2,334,029 | Qatar | 92%
|
| Z | 15,473,905 | Zambia | 91%
|
| J | 126,910,000 | Japan | 90%
|
| A | 43,131,966 | Argentina | 88%
|
| E | 90,076,012 | Ethiopia | 87%
|
| N | 183,523,000 | Nigeria | 87%
|
| P | 189,787,000 | Pakistan | 84%
|
| V | 90,730,000 | Vietnam | 84%
|
| M | 121,005,815 | Mexico | 81%
|
| T | 77,695,904 | Turkey | 81%
|
| H | 10,911,819 | Haiti | 75%
|
| D | 71,246,000 | Democratic Republic of the Congo | 70%
|
| L | 6,802,000 | Laos | 69%
|
| K | 46,749,000 | Kenya | 66%
|
| S | 54,002,000 | South Africa | 65%
|