求解一道Gmat数据充分题If x and y are integers,is y an even integer?(1) 2y – x = x^2 – y^2(2) x is an odd integer.条件(1)单独就是充分的 答案 From (1),we can know that x^2+x=y^2+2y.Because x is an odd integer,x^2 is an odd integer too.So the resuit of x^2+...
If x and y are integers,is y an even integer?(1) 2y – x = x^2 – y^2(2) x is an odd integer.条件(1)单独就是充分的 扫码下载作业帮搜索答疑一搜即得 答案解析 查看更多优质解析 解答一 举报 From (1),we can know that x^2+x=y^2+2y.Because x is an odd integer,x^2 is an...
If x and y are integers, is y an even integer?(1) $${2}{y}-{x}={x}^{2}-{y}^{2}$$(2) x is an odd integer. 选项: A、 Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient. B、 Statement (2) ALONE is sufficient, but statement (1) alone is ...
当x为奇时，2y-x为奇，x^2也为奇，所以要想x^2-y^2为奇，y^2必为偶，所以y为偶。当x为偶...
Data Sufficiency 试题详情 题目: Ifxandyare integers, isyan even integer? (1) 2y–x=x2–y2 (2)xis an odd integer. Ÿ 选项: 答案: A
(2) x is an odd integer. A:Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient. B:Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient. C:BOTH statement TOGETHER are sufficient, but NEITHER statement ALONE is sufficient. ...
答案是错误的，谁说x/y是偶数就x/y一定是偶数啊，比如6/2=3。所以2其实想说的是x/y答案是一个...
[*]不是整数也必然成立,因为x和y是不相等的互质数。 结果一 题目 If y≠3 and (3x)/y is a prime integer greater than 2, which of the following must be true ?()Ⅰ.x=y Ⅱ.y=1 Ⅲ.x and y are prime integers. A.条件(1)充分,但条件(2)不充分. B.条件(2)充分,但条件(1)不充分....
【题目】If is an odd integer and y is an even integer, which of the following must be an even integer?(1.y. (z+2)(y-5).A. |onlgB. ll onlyC. ll onlyD. |and|/cnlyE. I and lll only 相关知识点: 试题来源: 解析 【解析】E ...
(1)q is an even integer. (2)p is an even integer. A.条件(1)充分,但条件(2)不充分. B.条件(2)充分,但条件(1)不充分. C.条件(1)和(2)单独都不充分,但条件(1)和条件(2)联合起来充分. D.条件(1)充分,条件(2)也充分. E.条件(1)和条件(2)单独都不充分,条件(1)和条件(2)联...