|
- 精华
- 0
- 积分
- 72
- 经验
- 72 点
- 威望
- 0 点
- 金钱
- 119 ￥
- 魅力
- 39
|
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。
|
|
