Problem Solving
试题详情
题目：
If x, y, and k are positive numbers such that (
)(20) = k and if x < y, which of the following could be the value of k ?
选项:
A、10
B、12
C、15
D、18
E、30
答案:
D
If x, y, and k are positive numbers such that ()(20) = k and if x < y, which of the following could be the value of k ?
