标题: PP-DS-169 [打印本页] 作者: tart 时间: 2010-4-12 13:59 标题: PP-DS-169
If the integers a and n are greater than 1 and the product of the first 8 positive integers is a multiple of a^n, what is the value of a ?
(1) an = 64
(2) n = 6
------------------------------------------------------------------------------------------------------------------------------------------【答案】B
【思路】(1) = 64 , =64 , =64 , not sufficient
(2) n = 6 , = 64 , sufficient
我做的时候选了C，不太明白B是怎么单独得到的，另外想请问这句话
product of the first 8 positive integers is a multiple of a^n的意思是1*2*3*4*5*6*7*8是a^n的倍数么？？
欢迎光临 国际顶尖MBA申请交流平台--TOPWAY MBA (http://forum.topway.org/)
