2. 外语
  3. Two positive integers a and b have only one common divisor, if b/a+2=18/7, then which of the following could be the value of (a-

Two positive integers a and b have only one common divisor, if b/a+2=18/7, then which of the following could be the value of (a-

admin2021-10-21  41
问题 Two positive integers a and b have only one common divisor, if b/a+2=18/7, then which of the following could be the value of (a-b)?
选项 A、5
B、3
C、4
D、7
E、6
答案B
解析 两个正整数a，b只有一个公因子，那么这两个数的公因子必然为1，也就是说这两个数互质，b/a=18/7-2=4/7，所以b=4，a=7，那么a-b=3。
转载请注明原文地址:https://kaotiyun.com/show/k3tO777K
本试题收录于： GMAT QUANTITATIVE题库GMAT分类
0

GMAT QUANTITATIVE

GMAT

相关试题推荐
随机试题
最新回复(0)