【题目】If x,y and z are integers such thatxyz,thenthe least and the greatest possible value of x+zare ()(A)59,91;(B)59,135;(C)91,178;(D)120,135;(E)120,178.x 相关知识点: 试题来源: 解析 【解析】解这题时关于三角形内角关系的问题因为x+t+z=180,所以x+z=180-y,由于x、y、z...
If x and y are integers such that x3 = y2, which of the following could not be the value of y (A) -1(B) 1(C) 8(D) 16(E) 27 相关知识点: 试题来源: 解析 D Test each choice until you find the correct answer. Could y = -1 Is there an integer x such that x3 = (-1)...
In the figure above, if x, y, and z are integers such that xIf the percent increase in population from 1910 to 1920 had been approximately the same as the percent increase from 1900 to 1910, the 10-year increase, in millions, from 1910 to 1920, would have been approximately...
GRE最新数学机经400题
If x and y are integers such that x3 = y2, which of the following could not be the value of y Indicate all such values. A. -1 B. 1 C. 8 D. 12 E. 16 F. 27 点击查看答案&解析 延伸阅读你可能感兴趣的试题 1.单项选择题Alison is now three times as old as Jeremy, but 5 ...
In the figure above, if x, y, and z are integers such that x A. 59 and 91 B. 59 and 1
2 If x and y are positive integers such that x=8y+12,what is the greatest common divisor of x and 1) x=12u,where u is an integer 2) y=12z,where z is 由题知:x=4(2y+3) 由(1)知:x=12u 则y=3k k is an integer.x=12(2k+1) 则x,y最大公因子不能确定. 由(2)知:y=12...
If x and y are positive integers such that 3x+7y=88. Find the maximum value of x+y. 已知x、y为正整数且3x+7y=88,求x+y的最大值. 相关知识点: 试题来源: 解析 28. 已知x,y为正整数且3x+7y=88, 所以1⩽y⩽12,且3x与7y同为奇数或同为偶数, 当3x,7y均为奇数时,则x,y均为...
If x and y are positive integers such that x = 8y + 12, what is the greatest common divisor of x and y ? (1)x = 12u, where u is an integer. (2)y = 12z, where z is an integer.A、Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient. B、...
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,