老师今天在课堂上要选一个数学大王,他提了三个问题,你也来比一比吧,看看到底谁是真正的数学大王!第一题:假(jià)期里小鸭和小狗在公园拍照(zhào),他们有几种排法呢?(小动物必须排成一排)溜溜马上举手“:这个简单,小狗在右小鸭在左,或者小狗与小鸭换一下位置(zhì),小狗在左 The teacher today in the classroom to choose a math king, he raised three questions, you also to compare one to see who in the end who is the real math king! The first question: fake duck and small Dogs in the park to take pictures, they have a few kinds of law method? (Animals must be lined up) yo hands raise their hands ": This simple, puppies in the right duckling on the left, or puppies and duckling for Look at the location, puppies on the left