GMAT考试1-GMAT数学12月总结(三)
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41.圆柱体CAN, 半径=R,高=H, 若另一个圆柱体积相同，r=2/3 R, 那么高h为多少？ 9/4h 42.DS: 两个数列S,T，S 由偶数组成，T由奇数组成，两个数列个数相同，问S的MEDIAN 和T的算术平均值谁大？ (1) S,T 为连续的数 (2) S的算术平均值大于T的 43. 452*36*17 7 个数字中，哪个数字增加1，乘积增加小于1000？ A. 1 B. 2 C. 5 D. 7 E. 4 44. N 有几个不同的质数？ A. N 是7200的因子 B. 180 是N的因子 45． M, P, T 是positive integer, m A. T-P=P-M B. Forgot 46. 一个序列，从第三位数起，每个数都与它前面连续的两个数的和有关，the number is the sum of the 2 numbers in the sum is odd or ½ if the sum of the 2 numbers are even, the forth number is 7 and the fifth number is 5, what is the first number? 47. Give the English definition of standard deviation, 2 or 3 lines, there are 4 numbers, 9, 8, 7, 4, ask the standard deviation of these 4 numbers? 48. X, Y 是正整数，X 是3的倍数吗？ A. X-Y 是3的倍数 B. X-2Y是3的倍数 49. N除以3的余数是多少？ A. N除以2 余1 B. N+1除以3 余2 50. 正方体内有以内切球，直径为6，求正方体内最长的一条对角线长度 51．一正方形，10 <长< 20, 5<宽<9, 求周长范围 52． A. S, T 关系 B. t > 1 题目记不清，但是通过A, 求出T 有两值1，2，根据B，可确定T=2, 则答案选C 53. 卖门票 on Monday & Tuesday, children’s ticket $7 each, adult $10 each, children’s number on Tues is twice the number on Monday, adult’s number on Tues is ½ the number on Monday, the total revenue on Monday is $2700, revenue on Tuesday is $2400, what’s the children’s number on Monday? 54. –2 55．3个不同的旗子排列视为一个信号，有四面不同的旗子，可排成几个信号？ 56．从50加到100的和？ 57．孩子们拿笔，either 3 pens , 2 pencils, or 1 pen, 3 pencils, the average pen number is 1.6, what’s the average pencils number? (the number is not accurate) 58. lottery $16 billion, separate as gifts, government payment, and expense, give the relation of payment and gift & the relation of payment and presentation, ask the payment in $ amount 59. 7 red tomatoes, 5 green tomatoes, ask the probability of all 3 tomatoes are red …. 60. 某数的80%是多少? (具体叙述忘了，但翻译过来就是求这个式子) 61. Is xy >x^2y^2 A. 14X^2=3 B. Y^2=1 |
