Tag Archives: birthday

The birthday candle problem: solution

Posted on August 25, 2015 by Brent

Recall the birthday candle problem I wrote about in a previous post: A birthday cake has lit candles. At each step you pick a number uniformly at random and blow out candles. If any candles remain lit, the process repeats … Continue reading →

Posted in combinatorics, probability, solutions | Tagged , , , | 5 Comments

The birthday candle problem

Posted on August 7, 2015 by Brent

After a 1.5-month epic journey1, I am finally settling into my new position at Hendrix College. Here’s a fun problem I just heard from my new colleage Mark Goadrich: A birthday cake has lit candles. At each step you pick … Continue reading →

Posted in challenges, combinatorics, probability | Tagged , , , | 5 Comments

Perfect age

Posted on January 10, 2010 by Brent

Today is my birthday! This is the second and (barring any miraculous advances in medical science) final time that my age will be a perfect number. Unfortunately, the first time my age was a perfect number, I didn’t know what … Continue reading →

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