标题: og 11th DS 101 请教 [打印本页] 作者: celia511 时间: 2007-10-3 15:46 标题: og 11th DS 101 请教
If S is the infinite wequence S1=9, S2=99, S3=999, ..., Sk=10^k-1, is every term in S divisible by the prime number p? 1) p is greater than 2 2) at least one term in sequence S is divisible by p
答案是E
解题思路是什么？
谢谢了。
欢迎光临 国际顶尖MBA申请交流平台--TOPWAY MBA (http://forum.topway.org/)
