《300个最新世界著名数学智力趣题》(董 莉等编著,哈尔滨出版社,1995年出版)中有这 样一道题: 将线段AB的两个端点,一个涂红色,一个 涂蓝色．在线段中间插入n个分点,将各个分 点随意地涂上红色或蓝色．在由原线段分成的 n+1个不重叠的小线段中,把两端颜色不同者 叫做标准线段．那么。标准线段是奇数条,对 吗? The 300 latest world-famous mathematical intellectual puzzles (edited by Dong Li et al., Harbin Publishing, 1995) contain one such question: Put the two endpoints of segment AB, one painted red and the other painted blue. Insert n points in the middle of the line and red or blue. In the n+1 non-overlapping small segments that are divided by the original segment, those with different colors at both ends are called standard segments. So. The standard segment is an odd number, right?