Peter's son is the D of my son ,am I peter's grandson?Who am

问题描述:

Peter's son is the D of my son ,am I peter's grandson?Who am

D grandfather/grandpa
皮得的儿子是我儿子的爷爷,我是皮得的孙子吗?我是谁?
想想他们之间的亲戚关系,好玩啊!