| 10529 | History | Multiple Choice | Hard | During World War II, US soldiers used the first commercial aerosol cans to hold what? |
| 10528 | General Knowledge | Multiple Choice | Hard | What letter must appear on the beginning of the registration number of all non-military aircraft in the US? |
| 10527 | History | Multiple Choice | Hard | Who is credited with inventing the first mass-produced helicopter? |
| 10526 | Entertainment: Books | Multiple Choice | Hard | In the children’s book series, where is Paddington Bear originally from? |