GRE数学:a,b,and c are consecutive odd integers,not necessarliy in that order.比较a-b与b-c的大小

题目

GRE数学:a,b,and c are consecutive odd integers,not necessarliy in that order.比较a-b与b-c的大小

答案

not necessarliy in that order就是说abc大小顺序不一定
无法确认关系
当a>b>c时 a-b=b-c=2
当a>c>b时 a-b>b-c
·········
·········