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0.999...是否比1小？
不，0.999...并不比1小。它们是完全相同的数字，只是表示方式不同。这通常被误认为它看起来应该比1小一点，但从数学上可以证明它们是相等的。
不，0.999...并不比1小。

以下是推理：

1. 我们可以通过查看它们的小数表示法来比较0.999...和1。
2. 当我们写出0.999...的小数表示法时，它会一直持续下去：0.999... = 0.9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999900990999999099999999999099999999999999999999999999909909999000900099999900999990009999999009909999999999999999999999999990999999990099990999999999999999999999999999999999999999099999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999599999999999999999999999999999th99999999999999999999999999999t9999999999999999999999999999999999999999t999999999999ttt99999999999999999999999999999999999t9999999999999999999999999999999999999999999999999999999999999999999999999999999999999ttt99999999tttt9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999t999999999ttt999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999ttthttt99999999999999999999999999999999999999999999999999999999999999999999