| Age | President | % Correct |
|---|---|---|
| 43 | John F. Kennedy | 97%
|
| 42 | Theodore Roosevelt | 97%
|
| 47 | Barack Obama | 93%
|
| 49 | James K. Polk | 83%
|
| 46 | Bill Clinton | 80%
|
| 46 | Ulysses S. Grant | 67%
|
| 48 | Franklin Pierce | 63%
|
| 47 | Grover Cleveland | 63%
|
| 49 | James A. Garfield | 53%
|
| 50 | Millard Fillmore | 47%
|