tests by lutzen with the online test builder (11 tests)
Ranked by: number of candidates
1. Horse-riding (7150 candidates)
2. Vocabulary; teeth (4273 candidates)
3. War of the Roses (3339 candidates)
4. Castles and British Palaces (1995 candidates)
5. Royal Family (1752 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)