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-

admin2022-11-20  45
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/A4kO777K
本试题收录于： GRE QUANTITATIVE题库GRE分类
0

GRE QUANTITATIVE

GRE

相关试题推荐
随机试题
最新回复(0)