Is n divisible by m?
(1) 3n is divisible by m
(2) 13n is divisible by m
我怎么觉得两个statement都与题目所问insufficient呢~~但是直觉又告诉我这不对~~~求教啊!!作者: Steven0124 时间: 2012-5-14 21:47
不是吧 我觉得是C阿 (前提是m不是1。。)
如果3n is divisible by m,n 又不divisible by m,那么m就只能等于3.
同时13n is divisible by m,13处于3除不尽,所以n就只能是3的倍数啦,这样 n is divisible by m作者: Stefaniezhu 时间: 2012-5-16 21:51