| 3633 | Science: Mathematics | True / False | Medium | The set of all algebraic numbers is countable. |
| 3624 | Science: Mathematics | Multiple Choice | Hard | The French mathematician Évariste Galois is primarily known for his work in which? |
| 3622 | Science: Mathematics | True / False | Hard | In Topology, the complement of an open set is a closed set. |
| 3621 | Science: Mathematics | Multiple Choice | Hard | What is the plane curve proposed by Descartes to challenge Fermat's extremum-finding techniques called? |