临考，求助几道PREP数学题：）

opheliahe

1.is the measure of one of the interior angles of quadrilateral ABCD equal to 60 degrees?(CHOOSE e, why not B?)
(1)two of the interior angles of ABCD are right angeles
(2)the degree measure of angle ABC is twice the degree measure of angle BCD 

2.is the integer n odd?(choose b)
(1)n is divisible by 3
(2)2n is divisible by twice  as many positive integers as n. （（2）是什么意思？看晕了）

3.the integers m and p are such that 2<m<p is not a factor of p.if r is the remainder when p is divided by m, is r>1?(choose a, why not c?)
(1) the greatest common factor of m and p is 2
(2) the least common multiple of m and p is 30 

shiverson

1.条件2 说一个角是另一个两倍，四边形，怎么推60度呢？不一定啊

2.2n能被整除地数量是n能被整除地两倍

若是偶数，则n能最少被1，2，一直到n整除吧？这时候2n能被1，2，4，一直到2n整除，可是，这里的2是有原来n里的2和2n里的2倍重复了。所以数量上一定不是2倍。所以不是偶数

3.m,p最大公约是2，所以必不是4，所以p/m的话，余数肯定大于1。用6/4看看

opheliahe

谢谢哦.

第一道, 角ABC和BCD不应该是相邻的两个角吗?之和为180度.或者说四边行ABCD,不是按顺序标字母?

opheliahe

呵呵，是我弄错了，是四边形，非平行四边形。