请教prep一道题，没有头绪。关于整除

cician · 发表于 2013-10-22 21:58:16

For every positive even integer n, the function h(n) is defined to be the product of all the even integers from 2 to n, inclusive. If p is the smallest prime factor of h(100) + 1, then p is
(A) between 2 and 10 (B) between 10 and 20 (C) between 20 and 30 (D) between 30 and 40 (E) greater than 40

答案选E

请路过的牛牛解答一下

zsy2010 · 发表于 2013-10-23 09:53:17

h(100)=2^50 * 50! = 2^50 * (1*2*3*...*50) 所以大于50

请教prep一道题，没有头绪。关于整除

所属分类: GMAT考试

正在浏览此版块的会员 ()