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新版gre数学复习重要考点:Conditional.

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  俗话说:“工欲善其事必先利其器”。很多参加了新版gre考试的同学都觉得数学有点难度,相信这其中的原因还是由于考生在新版gre数学复习时没有把基础打牢。如果新版gre数学基本考点都没有复习到,如何能拿到分数呢?所以说,想要新版gre数学考好,复习的时候一定要把基本概念和重要考点都弄扎实。

  今天针对新版gre数学复习,小编给大家整理的是关于Conditional的相关内容,这些概念在考试中一定会考到的。希望考生能再接再厉,取得一个好成绩,突破新版gre数学难的困境。

  新版gre数学复习重要考点:Conditional

  Probability of event A conditioned on the fact that event B has happened is called the conditional probability and written as P(AIB).

  P(AIB)=Probability Both A and B happens/ Probability B happens.

  Example:

  A six-sided die with faces from 1 to 6 is rolled twice. What is the probability that the face 5 turned up on first try given that the sum of the two faces is 9?

  P(sum of faces is 9)=4/36=1/9.

  P(face 5 turns up on the first try and sum is 9)=(1/6)*(1/6)=1/36.

  P(face 5 turned up on first try given sum is 9)=(1/36)*(1/9)=1/4.

  Remember:

  If P(AIB)=P(A),then two events A and B are independent, that is occurrence of one does not influence the other.

  很多新版gre数学复习考点都是高中时候学到的知识点,考生不要过于紧张,把基本概念弄明白,再记住一些新版gre数学必备的词汇,那么相信新版gre数学应该没有问题。如果在新版gre数学复习中有任何的问题,可加入梦想家(bbs.aoji.cn),有很多专业的留学和培训专家等着你,为你排忧解难!或者加入澳际留学企业QQ:。

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