[計量] 問幾題數學.....>"<

看板GRE作者sakuratea (櫻花茶)時間16年前 (2009/05/16 14:33)推噓4(4推 0噓 3→)

留言7則, 5人參與討論串1/2 (看更多)

1. A is the set of positive odd intergers lsee than 100, B is the set of positive even intergers less than 5, and C is the set of product of x from set A and y from set B Column A: The number of distinct intergers in set C Column B: 100 Ans: C 為啥是C?? A:1,3,5,7,9.....,99 B:2,4 乘積數雖然會有100個...但不是會有幾個重複嗎??應該會比100少阿~"~ 請問我是哪裡搞錯了?? 2. This morning Pat went to the market with a red bag and a green one. If he bought 10 carrots and 6 radishes, in how many ways could he distribute these vegetables so that no bag would be empty? A) 120 B) 75 C) 60 D) 54 E) 45 Ans: B 有請神人解答了@@ 3. A cylindrical tank with radius 4 feet and hight 9 feet is lying on its side. The tank is filled with water to its depth of 2 feet. What is the volumn of the water, in cubic feet? ___ __ Ans: E-->48/ \ -36/3 (48拍-36根號3) 有請神人解答了@@ 4. Let n denote the smallest positive integer that is divisible by both 4 and 9 , and whose base-10 representation consists of only 4's and 9's, with at least one of each. What are the last four digits of n? A) 4,444 B) 4,494 C) 4,944 D) 9,444 E) 9.944 Ans: C 有請神人解答@@ 諸多問題請各位熱心解惑>"< 感激不盡!!! -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 61.228.101.246

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Emerica

05/16 14:36, , 1^F

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sakuratea

05/16 15:10, , 2^F

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sakuratea

05/16 15:11, , 3^F

05/16 15:11, 3^F