tests by lutzen with the online test builder (11 tests)
Ranked by: number of candidates
1. Horse-riding (7108 candidates)
2. Vocabulary; teeth (4214 candidates)
3. War of the Roses (3312 candidates)
4. Castles and British Palaces (1994 candidates)
5. Royal Family (1747 candidates)
6. Dynasty of Hanover (1535 candidates)
7. Stuart dynasty (1513 candidates)
8. Tudor dynasty (1397 candidates)
9. Scotland (1238 candidates)
10. Wimbledon Championship (922 candidates)
11. Plantagenet dynasty (584 candidates)