0.9, 1>0.99, 1>0.999, ..., but at last it says 1=0.999..., a negation of itself (Proof 0.999... =1: 1/9=0.111..., 1/9x9=1, 0.111...x9=0.999..., so 1=0.999...). So it is totally a paradox, name it as 【1 paradox】. ......]]> zh-tw Mon, 15 Jun 2026 22:04:57 +0800 5 Tue, 05 Nov 2013 09:45:29 +0800