Ballpark #10 · Monday, November 9, 2026

A microSD card, the Large Hadron Collider's ring and more

The Monday, November 9, 2026 puzzle: five questions, each with a number for an answer. How close can you get?

How long is a microSD card along its longer edge?The tiny memory card used in phones and cameras
How long is the circumference of the Large Hadron Collider's ring?The underground ring near Geneva
How tall is El Castillo, the stepped pyramid at Chichén Itzá, with its temple on top?Base to top of the temple
How much does the Tsar Bell in the Moscow Kremlin weigh, the largest bell in the world?As usually quoted, in tonnes
How much rain does Mawsynram, India, get in an average year?Annual average

93 players finished Ballpark #10. Average score: 364 of 1,000; 0% scored 800 or more.

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Show answers

💾 How long is a microSD card along its longer edge?15 mm
Renamed microSD in 2005, it is the smallest SD card format, about the size of a thumbnail.
Sources: en.wikipedia.org · theregister.com
⚛️ How long is the circumference of the Large Hadron Collider's ring?26.7 km
A proton circles this ring 11,245 times every second, travelling just under the speed of light.
Sources: en.wikipedia.org · home.cern
🏛️ How tall is El Castillo, the stepped pyramid at Chichén Itzá, with its temple on top?30 m
Its four stairways add up to one step for each day of the year when the top platform is counted.
Sources: en.wikipedia.org · history.com
🔔 How much does the Tsar Bell in the Moscow Kremlin weigh, the largest bell in the world?201.9 tonnes
It has never been rung: a 1737 fire cracked it in its casting pit, and a slab of over 10 tonnes broke off.
Sources: en.wikipedia.org · amusingplanet.com
🌧️ How much rain does Mawsynram, India, get in an average year?about 12,000 mm
Most of it falls in the monsoon months, and one day in June 2022 brought over a metre of rain.
Sources: en.wikipedia.org · universetoday.com