请教两道GWD

云彩雨 · 发表于 2011-5-3 15:57:38

26

Does the decimal equivalent of P/Q, where P and Q are positive integers, contain only a finite number of nonzero digits?

(1)P>Q

(2)Q=8
答案给的E 我觉得应该是C吧...题目是问P/Q是否是不含0的有限小数对吧? 分母是8就可判断这个小数是有限小数了吧 P又大于Q...
12

During a 10-week summer vacation, was the average (arithmetic mean) number of books that Carolyn read per week greater than the average number of books that Jacob read per week?

(1)Twice the average number of books that Carolyn read per week was greater than 5 less than twice the average number of books that Jacob read per week.

(2)During the last 5 weeks of the vacation, Carolyn read a total of 3 books more than Jacob.

答案给的A 我觉得选E... 条件1 是 2*C/10>2*P/10-5 对吧得出c-p>-25 啊不能判断c/10>p/10吧...求NN解答...

GWD数学的答案是很准确的么??

12

During a 10-week summer vacation, was the average (arithmetic mean) number of books that Carolyn read per week greater than the average number of books that Jacob read per week?

(1)Twice the average number of books that Carolyn read per week was greater than 5 less than twice the average number of books that Jacob read per week.

(2)During the last 5 weeks of the vacation, Carolyn read a total of 3 books more than Jacob.

答案给的A 我觉得选E... 条件1 是 2*C/10>2*P/10-5 对吧得出c-p>-25 啊不能判断c/10>p/10吧...求NN解答...

GWD数学的答案是很准确的么??

云彩雨 · 发表于 2011-5-3 17:12:36

求解答啊!!!!!

sally817 · 发表于 2011-5-3 18:41:28

麻烦问一下GWD是什么复习资料

云彩雨 · 发表于 2011-5-3 20:25:24

就是GMAT的真题你上资料版看看就知道了~
咋没人解答啊....

jeanq · 发表于 2011-5-3 20:34:17

第一题我也困惑来着= =

第二题lz题目意思看错了是5<2c<2j 直接推出c<j

mickywu · 发表于 2011-5-3 21:14:52

第二题直接就是5<2a<2b

steve_chem · 发表于 2011-5-3 21:33:12

第一题感觉第二个条件就足够了啊任何一个正整数除以8都不可能有无限位数的情况

莫非比如16/8不能算decimal?

steve_chem · 发表于 2011-5-3 21:48:38

貌似楼上对第二题的理解错了楼主正解。。。。看了几个外国论坛看是这样没错

tmacvsme · 发表于 2011-5-3 21:49:01

第一题如果是整数就不满足···所以选E

tmacvsme · 发表于 2011-5-3 21:55:04

第一题如果相除是整数就不满足···所以选E

第2题 LZ的理解没有错回帖的错了但是请LZ注意有10个星期，这个条件相当有用，请注意书只可能是整数。2倍的C比2倍的J-5要大，说明最多2倍的C只比2倍的J小4！！！然而4*2=8 没有10个星期不满足条件所以 C一定大于J~~

请教两道GWD

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