组合是高中数学中的一个主要内容,组合问题是高考中比较重要的一个考点,同时也是竞赛数学的一个重点内容。无论在国内还是国外,组合问题都是高中数学竞赛的“超级大国”之一,其问题往往也最为精彩,最能体现竞赛数学的智巧和精神。另外,组合数经常会与求和问题联系在一起,含有组合数的求和问 Combination is a high school mathematics, a major component of the combination of the college entrance examination is more important test sites, but also a key competition mathematics. Both at home and abroad, the combination problem is one of the “super powers” in the high school mathematics competition, and the problems are often the most brilliant. They can best embody the intelligence and spirit of competition mathematics. In addition, the number of combinations is often associated with the problem of summation, with summation of the number of combinations