Beyond the answers - interesting background to this quiz

The Sphinx and the riddle of its missing nose

Egypt's Great Sphinx has guarded the Giza plateau for thousands of years, carved from a single outcrop of limestone. Popular legend blames Napoleon's soldiers for its missing nose, but historical accounts suggest the damage occurred centuries earlier. The monument's human head and lion body have inspired countless theories about which pharaoh it was meant to represent.

Tripoli, a capital with many layers

Tripoli sits on Libya's Mediterranean coast and has been a trading hub for millennia, passing through Phoenician, Roman, Ottoman and Italian hands before becoming the capital of modern Libya. Its old medina still holds Roman-era ruins, including a triumphal arch. The city's long history makes it one of the more layered capitals in North Africa.

Kilimanjaro: Africa's rooftop

Mount Kilimanjaro in Tanzania rises to 5,895 metres, making it the highest peak on the continent and one of the world's tallest free-standing mountains. Unusually, it is not part of a mountain range but a dormant volcanic mass with three cones. Thousands of climbers attempt its summit each year, drawn by the fact that no technical climbing gear is required.

Titanic: a disaster that reshaped maritime safety

When Titanic struck an iceberg and sank in 1912, more than 1,500 people lost their lives. The scale of the tragedy prompted major changes in maritime law, including requirements for enough lifeboats for everyone aboard and the creation of an international ice patrol. The wreck was not located until 1985, the same year another famous film hit cinemas.

Thirty-two reasons to brush

Adults typically have 32 permanent teeth, including four wisdom teeth that often emerge in the late teens or twenties. Many people never develop all four, and dentists frequently remove them when they cause crowding or pain. Counting your own teeth is a quick way to see how typical your mouth really is.