请竹林大人 进贴。 摘自Kaplan GRE NEW 2011-2012 Q 第六份 13题。 There are 5 employees willing to serve on one of two different committees. IF each employee can only serve on one committee, how many possible ways are there for opening committees to be filled? Key: 5*4=20. 不解，求真相。
请竹林大人 进贴。 摘自Kaplan GRE NEW 2011-2012 Q 第六份 13题。 There are 5 employees willing to serve on one of two different committees. IF each employee can only serve on one committee, how many possible ways are there for opening committees to be filled? Key: 5*4=20. 不解，求真相。
今日更新一题吧 Let S be the set of all positive integers n such that n2 is a multiple of both 24 and 108. Which of the following integers are divisors of every integer n in S ? Indicate all such integers. A 12 B 24 C 36 D 72 谁能给一个很方便的解法啊？
今日更新一题吧 Let S be the set of all positive integers n such that n2 is a multiple of both 24 and 108. Which of the following integers are divisors of every integer n in S ? Indicate all such integers. A 12 B 24 C 36 D 72 谁能给一个很方便的解法啊？
A ranch has horses and ponies. Five-sixths of the ponies have horseshoes. Half of the ponies with horseshoes are Icelandic. If there are three more horses than ponies, what is the minimum number of horses and ponies on the ranch?" T) `" k- {/ x5 r4 u- _% u* @ A. 122 _1 t" ?* W1 n0 U$ U+ x8 P9 l/ d; a B. 15 C. 279 F Q8 C3 `) I& H2 A0 I; i# n D. 482 p5 H3 h) ~8 c! z% G E. 54 Ans: C
A ranch has horses and ponies. Five-sixths of the ponies have horseshoes. Half of the ponies with horseshoes are Icelandic. If there are three more horses than ponies, what is the minimum number of horses and ponies on the ranch? A. 12B. 15 C. 27D. 48 E. 54 Ans: C
1There was a $25 discount on every purchase of $75 there was a 10% charge on shipping which was added before the discount and 20% sales tax after the discount was added. If john paid total $300, what was the original amount of purchase if no sales tax was added per $75 Ans : 240. 2A price of product x is increased by p% to give new price y and then price of y is reduced by r% to give original price. Col A: p Col B: r Ans: D 3The number of numbers that can be formed by the digits 1,2,3,4,3,2,1. the odd digits are at odd places is given by A) 430 B) 215 C) 93 D) 36 E) 18 Ans: E 4x is an integer such that x > 3 Col a: number of even factors of 2x Col b: number of odd factors of 3x Ans: D 5Which of the following cannot be expressed as the sum of three consecutive integers? A. 0 B. 1 C. 2 D. 3 E. 5 无答案
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发表于 2012-2-12 21:30:22
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