鸡兔同笼是中国古代著名趣题之一。大约在1500年前 ，《孙子算经》中就记载了这个有趣的问题。书中是这样叙述的：“今有雉兔同笼，上有三十五头，下有九十四足，问雉兔各几何？”这四句话的意思是：有若干只鸡和兔同在一个笼子里，从上面数，有35个头；从下面数，有94只脚。问笼中各有几只鸡和兔。-Chickens and rabbits with cage is one of China' s famous ancient interesting question. About 1,500 years ago, " Sun Tzu Suan Jing"　on the records of this interesting question. This book is described: " ? Today there are pheasant rabbit with cage, there thirty-five under ninety four-legged, and asked pheasant rabbit geometrical"　This means that four sentences: There are a number of chickens and rabbits with in a cage　the top, there are 35 heads　the number below, there is 94 feet. Q cage in each of chickens and rabbits.