GMAT考试

【单选题】36 If x is an integer and y=4x+3, which of the following cannot be a divisor of y
A、5
B、6
C、7
D、9
E、23

网考网参考答案：B
网考网解析：
The most direct way to answer this question is to realize that for any integer x, 4x+3 cannot be an even number, so it therefore cannot be divisible by even numbers. Since 6 is the only even number among the answers, it has to be the answer. The other way to approach this is to plug a series of integers, starting with 1, into the equation and eliminate the choices until only 6 is left. document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>