| Letter | Number of islands | Country | % Correct |
|---|---|---|---|
| I | 17,508 | Indonesia | 96%
|
| J | 120,729 | Japan | 95%
|
| O | >10 | Oman | 95%
|
| Y | >100 | Yemen | 95%
|
| C | 52,455 | Canada | 94%
|
| D | >1000 | Democratic Republic of the Congo | 94%
|
| F | 178,947 | Finland | 94%
|
| Q | 10 | Qatar | 94%
|
| U | 18,617 | United States | 94%
|
| Z | 53 | Zambia | 94%
|
| R | 1338 | Russia | 92%
|
| N | 239,057 | Norway | 91%
|
| S | 267,570 | Sweden | 90%
|
| A | 8222 | Australia | 89%
|
| V | 4000 | Vietnam | 85%
|
| P | 7641 | Philippines | 84%
|
| B | >1000 | Brazil | 83%
|
| G | 6000 | Greece | 79%
|
| H | >40 | Hungary | 74%
|
| K | >100 | Kenya | 74%
|
| E | 2355 | Estonia | 73%
|
| T | 1430 | Thailand | 70%
|
| L | >4000 | Laos | 65%
|
| M | 1192 | Maldives | 51%
|