标题: gre 陈向东高分突破 [打印本页] 作者: atanchen 时间: 2015-4-14 18:06:05 标题: gre 陈向东高分突破
模拟第三套14题
Of 40 pairs of socks in a drawer,X pairs are solid white,Y pairs are solid gray,and more than 19 of the pairs are striped.比较X-Y 和 the number of striped pairs of socks in the drawer.