[計量] 幾題計量請教
看板GRE (GRE入學考試)作者ebedimy (sona erdi nihayet...)時間14年前 (2011/06/15 18:47)推噓5(5推 0噓 10→)留言15則, 6人參與討論串1/3 (看更多)
1. The sum of the digits of two-dight number n is n/4
Col A: n
Col B: 36
Ans: D
這題我只有一開始想到設兩個位數和為 10x+y
接下來就不知道要怎麼做了...
2. A card is drawn from a pack of 52 cards.
Col A: The number of outcomes in which a numbered card is drawn
Col B: 36
Ans: C
不是很了解A選項的意思...
3. If the product of 6 consecutive integers is equal to one of them,
what is the largest possible value of one of the integers?
(A) -1 (B) 0 (C) 5 (D) 6 (E) 12
Ans: C
4. A diner serves a lunch special, consisting of soup or salad, a sandwich,
coffee or tea, and dessert. If the menu lists 3 soups, 3 salads,
7 sandwiches, and 8 desserts, how many different lunch special can be
ordered?
(A) 22 (B) 280 (C) 336 (D) 560 (E) 672
Ans: E
這題我本來是將式子列成 (C6取1)x (C7取1)x (C8取1) = 336
不知到哪邊漏掉了
謝謝大家
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