There are two ducks in front of a duck and two ducks behind a duck,and one duck in the middle.

问题描述:

There are two ducks in front of a duck and two ducks behind a duck,and one duck in the middle.
How many ducks are there?

原文翻译 有两只鸭子在一只鸭子前面并且有两只鸭子在一只鸭子后面,并且一只鸭子在中间
所以一共有三只鸭子