Talk:Number

Writing a number

"An irrational number can not be written as a fraction, and can indeed not be written out fully at all." — Really? In which sense? "The numbers π and ${\sqrt {2}}$ are both irrational." — Are they written in this phrase? What exactly is meant here by written? It depends on the used language. In some languages 1/3 cannot be written. In some languages ${\sqrt {2}}$ can. Boris Tsirelson 11:39, 4 June 2010 (UTC)