07年1月的数学S9的最后一题:5 P. E; i# k; W$ y, u- }$ n0 P
On a square gameboard that is divided into n rows of n squares each, k of these squares lie along the boundary of the gameboard. Which of the following is a possible value of k?) \6 a6 E! \1 z
A 10 B25 C34 D42 E52 ?2 y- w* l2 U' Y0 V# p2 }+ u+ ]
S# j# Z7 z) n9 i
h1 i5 J1 x1 I* {) U$ o
我的数学实在很烂。。。谢谢大家了。。。鞠躬。。。