标题: 求解一道prep数学题 大家帮帮忙 [打印本页] 作者: brenda47 时间: 2011-3-12 21:24 标题: 求解一道prep数学题 大家帮帮忙 The integer M and P such that 2<M< and M is not a factor of P. If R is the remainder when P is divided by M, is R>1? (1) the greatest common factor of M and P is 2 (2) the least common multiple of M and p is 30 答案选A 我想问为什么B不对呢 请指教作者: Raymond_GMAT 时间: 2011-3-12 21:44
关于B，lz 看看 6和5， 10和3.作者: brenda47 时间: 2011-3-12 22:14
嗯，我就是这点不懂，两组取值得到的R都是1，这样能不能就说明R不大于1,从而回答了题干中的问题了呢作者: yiw006 时间: 2011-3-12 22:19
如果倒過來呢？
5/6
3/10 ?
題目未標明哪個數較大作者: brenda47 时间: 2011-3-12 22:39
啊~~sorry sorry 题干中 我少加了一个条件2<M<作者: brenda47 时间: 2011-3-13 13:51
自己顶作者: RabbitG 时间: 2011-3-13 17:05
In statement 1, both m and p are even. therefore, the remainder is even, so it's greater than 1.
In sataement 2, pick 5 and 6 ( the reminder is 1), 10 and 15 ( the reminder is 5 ), so it is insufficent.
and M is not a factor of P. If R is the remainder when P is divided by M, is R>1?