Which of the following is NOT equal to 1/5 of an integer?A -1B -1_数学解答

Which of the following is NOT equal to 1/5 of an integer?
A -1
B -1/5
C 1
D 3/2
E 5

人气：284 ℃　时间：2020-03-27 01:59:09

解答

一个数不等于某个整数的1/5,就是说它乘以5后不是整数,只有D是正确答案.