| Answer | % Correct |
|---|---|
| I | 70%
|
| L | 68%
|
| X | 68%
|
| XIV | 65%
|
| C | 63%
|
| IX | 63%
|
| II | 61%
|
| XV | 61%
|
| VI | 60%
|
| DXXI | 56%
|
| MMC | 56%
|
| LXVI | 53%
|
| MMX | 53%
|
| MC | 51%
|
| DV | 49%
|
| CXVI | 44%
|