作者wombat0914 (G神帮帮我)
看板GMAT
标题Re: [计量] PP1-PS 3.4.18.33.43题
时间Sun Aug 17 19:54:22 2008
※ 引述《amateurptt (剩自己了...)》之铭言：
: =========================================================================
: 3. A certain taxi company charges $3.10 for the first [?] of a mile
: plus $0.40 for each additional of a mile. What would this company
: charge for a taxi ride that was 8 mile long?
: (A)$15.60
: (B)$16.00
: (C)$17.50
: (D)$18.70
: (E)$19.10
: ans:D
: 我的解法如下,请各位帮我看哪有出问题
: 3.10 + 7*0.40 但是与答案差相当多,我看错题目吗?
: ============================================================================
: 4.In a stack of boards at a lumber yard, the 20th board counting from
: the top of the stack is immediately below the 16th board counting from
: the bottom of the stack. How many boards are in the stack?
: (A)38
: (B)36
: (C)35
: (D)34
: (E)32
: ans:D 想请问解题思路
: ===========================================================================
: 18. 3 teaspoons = 1 tablespoons
: 4 tablespoons = [?] cup
: According to the information above, how many teaspoons are equal to [?] cup?
: (A)3
: (B)4
: (C)9
: (D)12
: (E)18
: ans: E 一样想请问解题思路
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: 33.If x^4 + y^4 = 100, then the greast possible value of x is between
: (A) 0 and 3
: (B) 3 and 6
: (C) 6 and 9
: (D) 9 and 12
: (E) 12 and 15
: ans:B
: 我原以为题目要x最大,所以就要y^4为0
: 也就是 直接求x^4=100 ,x的最小值为?
: 但是答案不对,想请求正解!
: ============================================================================
: 43.A committee of three people is to be chosen from four married couples.
: What is the number of different committees that can be chosen if two people
: who are married to each other cannot both serve on the committee?
: (A)16
: (B)24
: (C)26
: (D)30
: (E)32
: ans:E
: 我的解法是
: 4 2
: C * C = 8 四对couples中选出三对 * 两个人选一
: 3 1
: 似乎思路出了问题, 希望高手指正!
应该是 4 2 2 2
C * C * C * C = 32
3 1 1 1
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