[問題] 九月數學 JJ

看板GRE (GRE入學考試)作者Parabellum (關關難過關關過)時間17年前 (2008/09/24 16:02)推噓0(0推 0噓 0→)

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請各位 g 友幫忙解答一下謝謝 1. Given that a fruit vendor has 'T' fruits and he sells 150 fruits of them for $0.36. The next day the vendor wants to get the same amount of money he got the previous day, so he changes the price, What is the changed price in terms of 'T'? 是不是要加上 $0.36 is per fruit cost 的條件才能算出 54 / ( T – 150 ) 的答案？ 2. A square carpet is laid on a square floor and the area of square floor is 30.64 more than the area of carpet. With the area of floor being 10% more than area of the carpet, what is the area of the carpet? 韓網上有兩個不同的答案。我是算 306.4。能否有人驗證一下？ 3. If z is a positive integer & if [z] represents the greatest value <=z then Col A: [x+y] Col B: [x]+[y] 韓網的答案是?? 我是覺得若 X Y 也是正整數則 A: x+y B: X=Y A=B 選 C 是 C 嗎? 4. An enterprise has a value of 10 - 20millions. If they give shares worth 100$-1000$ to all their employees for the entire value of the company, find the number of employees? 韓網沒答案但若選項若是 1,000-200,000 之間是否就是答案呢？ 5. Col A: 0.99999/0.99998 Col B: 1.0002/1.0001 韓網答案是 B 但我想是不是應該是 A 呢？ 6. If x and y are positive even numbers, then Col A: (-1)^(x+y)/2 Col B: (-1)^(x+y) 韓網答案是: B 可是我覺得是 D? 7. If 6 < 2x < 12 and 4 < x < 7, then Col A: x Col B: 5 韓網答案 : C 但為什麼不是 D？ 8. A 6 bicyclists has to be chosen from 4 adult and 4 children Col A: How many 3 adult and 4 children teams can be formed Col B: How many 2 adult and 2 children teams can be formed 這題出現很多次韓網答案是 B 但我算是 A 是 C43 * C43 + C42 * C44 =22 B 是 C42 * C44 + C44 * C42 =12 我算錯了嗎？ -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.112.4.235