ylchang - BBBbbbbb.....loggggggg
年度佳句:『樹大必有枯枝, 人多必有白痴. 樹不要皮必死無疑, 人不要臉天下無敵!』
Sunday, March 14, 2010
π (pi) day
π (pi) day 又到了~ 3.1415926535… 附上 Google 的圖
π-day organization:
http://www.piday.org/
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