If x and y are positive integers, is the product xy even? (1) 5x – 4y is even. (2) 6x + 7y is even. 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 not sufficient. C...
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...
If x, y,and z are positive integers, is xz even?(1)xy is even.(2)yz is even._出国考试答疑器_GMAT_试题_Data Sufficiency
If x and y are natural numbers such that x+ y = 2017, then what is the value of(−1)x+(−1)y? यदि x तथा y प्राकृतिक संख्याएँ इस प्रकार है कि x+y = 2017 है, तो(...
If x and y are positive integers, is x>y ?() (1)x3<y (2) 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. ...
1GMAT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 2 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 in...
If x and y are positive integers and (2x +y) is even, which of the following must be even ? Ax3+2xy2 B3x2+2y C4x2+x+y2 D5x2+x+y3Submit Question 3 - Select One If distinct numbers x,y,zandp are chosen from the numbers -2, 2, 1/2, -1/3, what is the largest possible...
单项选择题 If x and y are integers and xy=5, then (x+y)2=()。 A.13 B.16 C.25 D.26 E.36 点击查看答案&解析手机看题 你可能感兴趣的试题 单项选择题 If ω, x, y, and z are non-negative integers, each less than 3, and ω(33)+x(32)+y(3)+z=34,thenω+z=()。 A.0 ...
Prove or disprove: if {eq}xy {/eq} and {eq}x + y {/eq} are both even, then both {eq}x {/eq} and {eq}y {/eq} are even. Even and Odd Numbers: Let's say we have two numbers {eq}\displaystyle a {/eq} (which is an even number) and {eq}\di...
Prove each of the following statements : a) The sum of two even integers is always even. ) The sum of an even integer and an odd integer is always odd. Consider the following theorem: if x and y are odd integers, then x + y is even. Give a proof of this ...