Five piece of wood have an average length of 124cm and a median length of 140, what is the maximum possible length, in cm, of the shortest piece of wood? 答案是100 但是我想不明白为什么。既然平均值是124,那么5根的总长就是124*5=620,在中值为140的情况下,这5根的长度可为1,1, 140, 141和337,怎么会得出100这个答案呢?