March 14th, 2011

@Wolfram_Alpha

Happy Pi Day from Wolfram|Alpha! Here’s why pi is our favorite number: http://bit.ly/eDUU2j

via TweetDeck (retweeted on 8:07 PM, Mar 14th, 2011 via web)

Heute ist Pi-Tag (3/14) ^^ : http://de.wikipedia.org/…

via web

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