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MrAerospace

Trivia - counting the years

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MrAerospace    10
MrAerospace

2013 might look an uninteresting number for a year but it is in fact a mathematical rarity: a year whose digits, when rearranged, can form a simple arithmetic progression: i.e. 0,1,2,3. The last such year was 1432. The next will be 2031, after which we will have to wait until 2103 for the next one. The good news, for those who believe in ominous dates, is that nothing terribly bad happened in 1432. Florence defeated Siena at the Battle of San Romano, there was a civil war in Lithuania and a small revolt against the Ottoman Empire in Albania.

The Spectator 29 December 2012

 

(Thanks to Ray Hattingh's SAARP newsletter!)

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Pierre_Henri    10
Pierre_Henri

great info

 

Great info!

Edited by Pierre_Henri

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