| Years | Answer | % Correct |
|---|---|---|
| 1888-1918 | William II | 97%
|
| 1688-1713 | Frederick I | 87%
|
| 1740-1786 | Frederick II | 85%
|
| 1861-1888 | William I | 85%
|
| 1888 | Frederick III | 81%
|
| 1713-1740 | Frederick William I | 72%
|
| 1786-1797 | Frederick William II | 71%
|
| 1797-1840 | Frederick William III | 66%
|
| 1840-1861 | Frederick William IV | 65%
|