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## #math trivia solution: Each day there’s a 20% chance that a given class has a quiz. …

#math trivia: Each day there’s a 20% chance that a given class has a quiz. What’s the chance that at least one of the five classes does? — Burt Kaliski Jr. (@modulomathy) September 25, 2012 To determine the chances that something happens at least once, it’s often easiest to figure out the probability p that … Continue reading

## Surely You’re Joking

For my birthday this year, my sister gave me a copy of Surely You’re Joking, Mr. Feynman. In Part 1, subtitled “From Far Rockaway to MIT,” the famous physicist describes how at age 11 or 12 he built his own electrical circuit with lamps and switches. At around the same age, I built a circuit … Continue reading

## Hello world!

Welcome to WordPress.com. After you read this, you should delete and write your own post, with a new title above. Or hit Add New on the left (of the admin dashboard) to start a fresh post. Here are some suggestions for your first post. You can find new ideas for what to blog about by … Continue reading