如果有人出这样一道题:由两个阿拉伯数字“1”组成的最大数是多少?也许你很快就能作出回答:11。又问:三个“1”所能组成的最大数是多少?回答似乎也很容易:111。再问:四个“1”呢?恐怕很多人会脱口而出:1111。如果稍作一会思考便会发现,这个答案是错误的,正确的答案应当是“11~(11)。这当然是一个近乎游戏性质的问题,即使回答错了,也并不说明你的 If someone came out with a question like this: What is the maximum number of two Arabic numerals ”1 “? Perhaps you will be able to reply shortly: And ask: What is the maximum number of three ”1 “? The answer seems easy: 111. Ask: four ”1 “? I am afraid many people blurted out: 1111. If you take a moment to think, you will find that the answer is incorrect and the correct answer should be ”11 ~ (11). This is, of course, a nearly game-quality question, and even if the answer is wrong, it does not mean that your