| Rank | Country | Age | % Correct |
|---|---|---|---|
| 3 | Niger | 19.4 | 89%
|
| 1 | Chad | 19.2 | 73%
|
| 13 | Ethiopia | 20.7 | 70%
|
| 9 | Mali | 20.4 | 70%
|
| 9 | Central African Republic | 20.4 | 59%
|
| 15 | Eritrea | 21.1 | 57%
|
| 2 | Afghanistan | 19.3 | 53%
|
| 8 | Uganda | 20.3 | 53%
|
| 19 | Benin | 21.3 | 51%
|
| 12 | Guinea | 20.6 | 50%
|
| 7 | Malawi | 20.1 | 50%
|
| 14 | Sierra Leone | 20.8 | 50%
|
| 17 | Zambia | 21.2 | 50%
|
| 5 | Bangladesh | 19.9 | 49%
|
| 15 | Burkina Faso | 21.1 | 49%
|
| 17 | Liberia | 21.2 | 49%
|
| 4 | Mozambique | 19.6 | 49%
|
| 9 | Madagascar | 20.4 | 41%
|
| 6 | Nepal | 20.0 | 36%
|
| 19 | São Tomé and Príncipe | 21.3 | 14%
|