【GRE数学】If x is an odd integer,for which of the following equations must y be an even integer?RT 其他选项都排除了,只剩x+2y=7 & 2x+y=6PS.by the way,integers between 1 and 100,包括1和100这两个数吗?

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/29 16:55:19

【GRE数学】If x is an odd integer,for which of the following equations must y be an even integer?
RT 其他选项都排除了,只剩x+2y=7 & 2x+y=6
PS.by the way,integers between 1 and 100,包括1和100这两个数吗?

2x+y=6中y是偶数.因为2x是偶数,因此y只能是偶数,而第一个式子中y不论奇数或偶数,那个式子都有成立的可能.
integers between 1 and 100,应该是包括1和100的.

the correct answer is 2x+y=6
whatever x is, 2x must be odd integer,so ...

GRE猴哥112数学难题 40题if n is an integer and 99< n的平方 【GRE数学】If x is an odd integer,for which of the following equations must y be an even integer?RT 其他选项都排除了,只剩x+2y=7 & 2x+y=6PS.by the way,integers between 1 and 100,包括1和100这两个数吗? 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 一道GRE数学In a list of numbers,the first number is 3,the second is 4,and each subsequent number is the sum of all the proceeding numbers in the list.If the 20th number in the list is x,what is the 25th number in the list?A 7x B 16x C 32x D 35x E 求教一道GRE数学题x is an integer greater than 1,比较3^(x+1)和4^x哪个大? Gre数学. [GRE数学]If -m/19 is an even integer,which of the following must be true?问m是什么数.给出五个选项,分别是 A:negative number(负数),B:positive number(正数),C:prime number(质数) ,D:odd integer(奇数) ,E:even integer GRE数学中的 The range 值域?定义域?就比如一句话中“the range of the five number is 2 or more” 这里的range是指值域还是定义域?可参照猴哥数学112道难题中的第48题“if the average of x,y,z,5,and 7 is 8,which of 求一prep数学题!3、Each employee of Company Z is an employee of either Division X or Division Y,but not both.If each division has some part-time employees,is the retio of the number of full-time employees to the number of part-time employees gre 英文数学概率题If three fair dice are thrown,and the sum is an odd number,what is the probability that all threedice show an odd number? 求高手翻译 gre的一道练习题If at the end of 1973 Company X sold 30,000 shares od common stock for 35 times Company X's earnings for the year , what the price of a share of common stock at that time ? GRE数学考多久 gre数学难不难 gre数学低怎么办 【GRE】数学 如图 GRE数学.15题 Gre数学.22题 GRE数学怎样备考