tests by lutzen with the online test builder (11 tests)
Ranked by: number of candidates
1. Horse-riding (7141 candidates)
2. Vocabulary; teeth (4273 candidates)
3. War of the Roses (3339 candidates)
4. Castles and British Palaces (1995 candidates)
5. Royal Family (1749 candidates)
6. Dynasty of Hanover (1541 candidates)
7. Stuart dynasty (1520 candidates)
8. Tudor dynasty (1400 candidates)
9. Scotland (1246 candidates)
10. Wimbledon Championship (922 candidates)
11. Plantagenet dynasty (586 candidates)