tests by lutzen with the online test builder (11 tests)
Ranked by: number of candidates
1. Horse-riding (7106 candidates)
2. Vocabulary; teeth (4203 candidates)
3. War of the Roses (3310 candidates)
4. Castles and British Palaces (1994 candidates)
5. Royal Family (1746 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)