[計量] If S is a set of all 2-digit ...

看板GRE (GRE入學考試)作者 (櫻花茶)時間17年前 (2009/03/16 13:10), 編輯推噓2(201)
留言3則, 2人參與, 最新討論串1/2 (看更多)
1. If S is a set of all 2-digit integers that consist of multiples of 3 or multiples of 5, then what is the value of the range in set S ?? A)77 B)81 C)87 D)89 E)91 ANS:D 他問的是啥意思?? 是求範圍嗎?? 2. If three line segments AB, CD, and EF intersect each other at point O, then how many sets of "vertical angles" are there? A)2 B)4 C)5 D)6 E)8 ANS: D 這題有圖... 它是三條線相交於一點... 可我怎麼算...也只有2個直角... 請問我是哪裡弄錯了?????? 請熱心的版友解答疑惑>"< 感激不盡... -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 61.228.98.140

03/16 14:47, , 1F
1.99-10=89 99是3的倍數,10是5的倍數 分別是範圍的最
03/16 14:47, 1F

03/16 14:47, , 2F
大最小值
03/16 14:47, 2F

03/16 17:46, , 3F
2. vertical angles:對頂角 有六組
03/16 17:46, 3F
文章代碼(AID): #19lTzV5E (GRE)
文章代碼(AID): #19lTzV5E (GRE)