There are 4 boys in the middle,4 boys behind one boy and one boy in the middle

问题描述:

There are 4 boys in the middle,4 boys behind one boy and one boy in the middle
how many boy are there?
非常急

有四个男生在当中,四个男孩在一个男孩后面,当中还有一个男孩.
4+4-1-1=6
答案 6boys