21.If x and y are integers and xy+x^2 is odd,which of the following statements must be true?① x is odd② y is odd③ x+y is oddA.①B.③C.① and ②D.① and ③E.② and ③2.For how many integers n is (2n+1)(3n-1) a negative number?A.NoneB.OneC.TwoD.ThreeE.Fou...
If x and y are integers and xy2 is a positive odd integer, which of the following must be true? Axy is positive. Bxy is odd. Cx + y is even. 显示答案 登录后才可以添加做题笔记哦,还没有账号? 马上注册 KMF 解析 网友解析 题目数据 收起 暂无解析 以上解析由 考满分老师提供。 题...
解决你的问题 在这里你可以: GMAT全题库答疑 GMAT全真模拟考试 微信登录 Data Sufficiency 试题详情 题目: IS (X+Y)^3 an even integer? (1)X and Y are integers. (2)XY=9 选项: 答案: C 经典答疑 发起提问 提问: 点此查看答疑 不会做这种题 请老师答疑 谢谢 ...
所以这两个数之间自然就是有x-y+1-2=x-y-1个数了 方便理解的话，可以把x和y用具体数字带入 比如x=3，y=1 从x到y一共有3个数，两个数之间有1个数
If x and y are integers, is y an even integer? (1) 2y – x = x2 – y2 (2) x is an odd integer.Ÿ_出国考试答疑器_GMAT_试题_Data Sufficiency
我觉得用直接代数求就行比如x是5y是2然后选符合的那个选项结果一 题目 GRE数学题 If x and y are integers and x>y>0If x and y are integers and x>y>0,how many integers are there between ,but not including,x and x-y-1 答案 题目:xy是整数,并且x>y>0,有多少个不包括xy在内的整数在...
If x and y are integers, is y an eveninteger?(1) 2y – x = x2 –y2 (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 ...
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+...
1)x=12u=4(2y+3),=> Y=3/2(u-1),X=12u,=> Y/X=u-1/8u,（你看u=3带入x,y.公约为3,=5,公约为6.）x,y正整数 =>公约不定.2）同上理：Y/x=8Z+1/Z 无论z是几,公约都只是1 gmat的题吗,
解析 A [解析] 因为x和y都是整数,所以由x2<y可以推出一定有x<y,从而充分地回答了x不大于y,所以(1)充分(注:对题目中的问题否定的回答也是充分的回答);通过举例可以验证(2)不充分,如对于满足[*]的x=1,y=2有x<y,而对于满足[*]的x=4,y=3,则有x>y。