PUZZLE #32SUNDAY, OCTOBER 18, 2026
The answers
- Finished rounds
- 4
- Average score
- 586
- Best score
- 831
01HISTORY
How long did Lady Jane Grey reign as Queen of England?
9 days
Nine days in July 1553, the shortest reign in English history. She was executed the following year, still a teenager.
75% of players got it inside their bracket
02PHYSICS
What is the half-life of carbon-14, the basis of radiocarbon dating?
5,730 years
About 5,730 years, which is why radiocarbon dating stops being useful for anything much older than 50,000 years.
25% of players got it inside their bracket
03PLANTS
How many species of tree are there on Earth?
73,000 species
About 73,000, on a 2022 estimate — of which roughly 9,000 have yet to be discovered.
0% of players got it inside their bracket
04TRANSPORT
What is the wingspan of the widest aircraft ever flown?
385 feet
About 385 feet — the Stratolaunch, wider than an American football field is long.
75% of players got it inside their bracket
05LANGUAGE
How many letters are in the Khmer alphabet of Cambodia, the world’s longest?
74 letters
74 — the longest alphabet in the world.
50% of players got it inside their bracket