gre数学难题大全集锦

2022-06-08 00:22:57

  在数学基本知识都知晓的情况下,也会出现自己不会的难题。如果在考试的时候遇到难题的话,一是浪费时间,二是浪费自己的信心,削弱自己的心态,今天小编整理了gre数学难题大全集锦!

  1 The sum of two numbers, x and y, equals twice their products. if x=3, what is the value of y?

  这道题没大看懂?请问大家是这样么?

  x+y=2xy,求y.

  2 If x is an integer and x2(x的平方)<37,what is the greatest possible value of x minus the least possible value of x?

  我觉得这道题x的最大值为6,最小值为0,所以选6.

  a.5 b.6 c.10 d.12 e.36

  选D,最大为6,最小为-6.

  3 三角形ABC,角B=X度,X>90 度,比较三角形的周长与3倍AC的长度的大小,答案是B

  AC是最大边,所以AB+BC+AC

  2.0

  比较the greatest value of p(1-p)与1/2的大小,答案是C

  答案错了,选B p+(1-p)>=2p(1-p)^1/2 => p(1-p)<=1/4 <1/2

  4 For the line with equation y=ax+b,the x-intercept os twice the y-intercept

  比较the slope of the line 与1/2的大小,答案是D,但算出来是-1/2呀

  还有截距为零的情况,所以D.

  5 A certain moneymarket account that had a balance of $48000 during all of last monthearned $360 in interest for the month. at what simple annual interestrate did the account earn interest last month?

  答案是9%,题目没看懂

  意思是一个货币市场上个月共结余48000,用它赚了360的利息,问以年单利计算每年利率是多少?

  360*12/48000=9%

  以上就是小编为大家带来的关于gre数学难题大全的相关内容,希望可以对大家的备考有所帮助,更多精彩内容敬请关注


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