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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AT least One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：AT least One If probability of event A happening is p and event B happening is q, then the probability that at least one of them happens is . Example: There are 20 quarters, 33 nickels, and 47 pennies in a jar. The probability that a randomly selected coin is a quarter= 20/=20/100=0.2 and the coin is nickel = 33/100 =0.33.The probability it is either a quarter or a nickel = 0.2+0.33=0.53. Remember: The events needs to be mutually exclusive, that is if one happens the other cannot happen: a coin is either a quarter or nickel but not both. | 
