Author Archives: Ben Weiss

Multiples of 11

Anna loves multiples of 11. Bibi is not quite so keen. One day Anna is flipping idly through the yellow pages (full of 10-digit numbers including area codes), and notices that every number seems to have the interesting property that … Continue reading

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Paratroopers Riddler

From this week’s FiveThirtyEight.com Riddler column, slightly reworded for clarity: “During their descent, three paratroopers were blown off course and crash-landed in the desert — an infinite, uniform, two-dimensional plane. They come to at a random time after the crash … Continue reading

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Frax!

Way back in 2010, I decided it was about time for me to learn how to write an iPhone app. The newest device was the iPhone 3gs, running iOS 3.0. I needed an idea, a seed to build a project … Continue reading

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How long can you hold your breath?

A new personal best: 150 meter swim on a single breath of air!

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