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

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 GMAT中数据充分性题是指什么类型的题?数据充分性?这是什么意思啊? GMAT数学求解If x, y, z areinteger and xy+z is an odd integer, is x an even integer?1) xy+xz is an even integer2) y+xz is an odd integer GMAT的一道题, 求解一道GMAT题!forty percent of the rats included in an experiment were male rats.If some of the rats died during the experiment and 30 percent of the rats that died were male rats,what was the ratio of the death rate among the male rats to the 求解一道GMAT的试题题中的both和also难道不是一个意思吗? 请教一道GMAT语法题 GMAT数据填充题怎么做? 求解GMAT一道数学题[1/(2n-1)!]-[1/(2n+1)!]简化后等于an^2+bn+c,问a+b+c等于多少? 一道gmat题if x>0,then 1/[v(2x)+vx)]=A.1/v(3x)B.1/[2v(2x)]C.1/(xv2)D.(v2-1)/vxE.(1+v2)/vx gmat数学DS部分 prep上的一道题,gmat数学DS部分 prep上的一道题,也看不到答案.177.If x and y are positive integers,what is the value of xy (1) The greatest common factor of x and y is 10.(2) The least common multiple of x and y is 如何成功应对GMAT数学中的DS（数据充分性）问题 一道GMAT数学题求解.If y≠3 and 3x/y is a prime integer greater than 2,which of the following must be true?1.x=y2.y=13.x and y are prime integers.A NoneB 1 onlyC 2 onlyD 3 onlyE 1 and 3答案给出的是A，我觉得选B，请问条件1有什 求解一道GMAT数学题Note: Figure not drawn to scale. The figure shows a square patio surrounded by a walkway of width x meters. If the area of the walkway is 132 square meters and the width of the patio is 5 meters greater than the width of the Gmat数学,求解! GMAT数学的一道题,QR=RS,ST=TU,即可求出x, 问一道gmat语法题!Heavy commitment by an executive to a course of action,especially if it has worked well in the past,makes it likely to miss signs of incipient trouble or misinterpret them when they do appear.A.Heavy commitment by an executive 求解一道GMAT的试题答案说是选最后一个,可是明明哪个都不对嘛