Top posts

Every blog post that took off on Hacker News, ranked by the votes of its best submission. 2,466 posts.

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2010
1571

Divisibility by 7

How can you tell whether a number is divisible by 7? Almost everyone knows how to easily tell whether a number is divisible by 2, 3, 5, or 9. A few less know tricks for testing divisibility by 4, 6, 8, or 11. But not many people have ever seen a trick for testing divisibility

1577

Ejection Seats

I pulled a few pranks in the military, but the one that got pulled on me took years off of my life. Alone in the Cockpit There isn’t anything cooler for a 19-year old then getting into the cockpit …

1585

Not for sale

You can’t say your company is not for sale these days without incredulous stares and doubtful gasps. The big flip has become the holy grail. Worshipped to the point where non-believers are chastised, straight-faced, for refusing to give up their life’s work. See, the new world of …