菜的做法一共有几种可能？问题如下：一共有9个萝卜，两个萝卜可以做一小盘菜，三个萝卜可以做一大盘菜，菜的做法一共有几种可能？

有同学认为，菜的做法一共有两种可能：1、一小盘菜；2、一大盘菜。但怎么感觉有点像脑筋急转弯啊？所以ziyo认为答案应该是：把9个萝卜用完，应该有2种可能：1、三大盘菜（3×3＝9）；2、三小盘菜，再加一大盘菜（2×3+3＝9）。

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