2013年4月gre考试备考：gre数学考点之At Least Once
新GRE数学考试的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GRE数学必备的词汇，那么相信新GRE数学应该没有问题。下面新东方网GRE频道(gre.xdf.cn)给大家整理的是关于At Least Once的相关内容，希望对各位考生有所帮助。 At Least Once If probability of an event happening is p, then the probability that the event happens at least once in n trials is 1-(1-p)∧n. Example: To understand the equation follow these steps: 1.The probability of the event not happening is 1-p. 2.The probability it won't happen n-times in a row is (1-p)∧n. 3.Probability it will happen at least once is 1-(1-p)∧n. Probability that a... [ 查看全文 ]2013年4月gre考试备考：gre数学考点之At Least Once的相关文章
2013年4月新gre考试备考：gre数学考点Adding Monomials
Adding Monomials To add two monomials of the same variables just add the coefficients. Only two like monomials can be added together. Example: By adding 3x and 4x, we get (3+4)x=7x. By adding 3xy...[ 查看全文 ]
