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3个同学坐成一排合影有几种做法
更新时间： 2020-07-07 00:00:00  

设三个人为甲、乙、丙，坐法有：

1、甲在中间，乙丙在两侧有两种方式；

2、乙在中间，甲丙在两侧有两种方式；

3、丙在中间，甲乙在两侧有两种方式；

4、一共6种坐法。

关键词： 同学 合影 做法

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