GRE考试

根据网考网考试中心的统计分析，以下试题在2019/3/20日GRE考试习题练习中，答错率较高，为：57%
【单选题】If x is an integer, then the units digit of x squared cannot be
A、0
B、1
C、2
D、5
E、6
网考网参考答案：C，答错率：57%
网考网试题解析：
To solve this problem, find examples of squares in which the units digit is equal to the answer choices in order to eliminate answers: 10 2 =100, so eliminate answer choice A; 1 2 =1 and 9 2 =81, SO eliminate answer choice B; 5 2 =25, so eliminate answer choice D; 6 2 =36, so eliminate answer choice E. There is no example that allows you to eliminate answer choice C, so it must be the correct answer. document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>