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大约在一千五百年前,大数学家孙子在《孙子算经》中记载了这样的一道题:“今有雏兔同笼,上有三十五头,下有九十四足,问雏兔各几何?”这四句的意思就是:有若干只鸡和兔在同一个笼子
About 1500 years ago, the grand mathematician grandson wrote a question in the book “The Grandson's Classics”: “There are youngsters in this cage, thirty-five heads and ninety-four feet. Ask the young rabbit's geometry?”The four sentences mean: There are several chickens and rabbits in the same cage.