求助一道PREP 数学DS题...If r and s are positive integers,is r/s an integer?(1) Every factor of s is also a factor of r.(2) Every prime factor of s is also a prime factor of r.但我觉得AB是一个道理,都不应该选啊...犯迷糊,..

求助一道PREP 数学DS题...If r and s are positive integers,is r/s an integer?(1) Every factor of s is also a factor of r.(2) Every prime factor of s is also a prime factor of r.但我觉得AB是一个道理,都不应该选啊...犯迷糊,.. gmat数学DS部分 prep上的一道题,gmat数学DS部分 prep上的一道题,也看不到答案.177.If x and y are positive integers,what is the value of xy (1) The greatest common factor of x and y is 10.(2) The least common multiple of x and y is 求助数学一道题!谢谢 who 有gmat prep破解版的数学PS和DS,尤其是PS.thankyou 请问GNAT数学prep破解中ps和ds有什么不同? 求助数学大神,一道排列题 求助一道高一数学几何题. gmat prep数学prep里有这样一道数学题.for all the positive integers m, m(这个m外面有方框)=3m if m is odd, m(方框)=1/2m if m is even. Then which of the following is equivalent to 9（方框）*6（方框）?答案包括：81,54,36,27 一道三角函数题,急,求助,数学高手看看吧 一道逻辑题求助 求助一道几何题? 求助一道线性代数题 求助,救命一道题 求助初三数学一道三角函数题目 问一道GMAT的DS题a school administrator will assign each student in a group of n students to one of m classrooms. if 3 gmat数学ds 求问一道GMAT数学DS题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) a ^n =64(2)n=6求问题翻译跟答案解析 一道GMAT数学DS题Each of the 25 balls in a certain box is either red, blue or white and has a number from 1 to 10 painted on it. If one ball is to be selected at random from the box, what is the probability that the ball selected will either be w