| Answer | % Correct |
|---|---|
| I | 71%
|
| L | 69%
|
| X | 69%
|
| XIV | 66%
|
| C | 64%
|
| IX | 64%
|
| II | 62%
|
| XV | 62%
|
| VI | 60%
|
| DXXI | 57%
|
| MMC | 57%
|
| LXVI | 53%
|
| MMX | 53%
|
| MC | 52%
|
| DV | 50%
|
| CXVI | 45%
|