标题: GMAT Princeton 上一题求解 [打印本页] 作者: xiuxiuxixi 时间: 2013-3-21 11:17 标题: GMAT Princeton 上一题求解 Kathren needs to plant a group of four different plants in each of her three flowerbeds. If she has twelve different plants, how many different arrangements of plants could she have in her garden?