[計量]GWD30-Q13

看板GMAT (GMAT入學考試)作者 (耍人)時間17年前 (2009/07/08 23:06), 編輯推噓1(103)
留言4則, 2人參與, 最新討論串1/1
Q13: If x + y is an integer, is y an integer? (1) x – y is an integer. (2) x + 2y is an 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 statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient. D. EACH statement ALONE is sufficient. E. Statements (1) and (2) TOGETHER are NOT sufficient. 答案是B WHY? (X,Y) 不有可能也是 (1/3,1/3) or (整數,整數)嗎? -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 58.114.189.97

07/08 23:24, , 1F
X+Y是整數阿(題幹) 1/3+1/3 不是整數
07/08 23:24, 1F

07/08 23:28, , 2F
X+Y是整數(a) X+2Y是整數(b)
07/08 23:28, 2F

07/08 23:28, , 3F
(b)-(a) y=整數
07/08 23:28, 3F

07/09 21:31, , 4F
THANK YOU~~
07/09 21:31, 4F
文章代碼(AID): #1ALBOBne (GMAT)
文章代碼(AID): #1ALBOBne (GMAT)