tests by lutzen with the online test builder (11 tests)
Ranked by: number of candidates
1. Horse-riding (7170 candidates)
2. Vocabulary; teeth (4276 candidates)
3. War of the Roses (3341 candidates)
4. Castles and British Palaces (1995 candidates)
5. Royal Family (1753 candidates)
6. Dynasty of Hanover (1541 candidates)
7. Stuart dynasty (1520 candidates)
8. Tudor dynasty (1401 candidates)
9. Scotland (1248 candidates)
10. Wimbledon Championship (922 candidates)
11. Plantagenet dynasty (587 candidates)