新GRE数学要点:Multiple Times

会计考友

　　　Multiple Times
* @4 D/ Z6 c9 M2 z" O2 e　　If probability of an event happening is p, then the probability that the event happens n times in a row is p∧n.
/ u* ~. o, Y8 u# U1 J　　Example:
　　The probability that a coin toss results in head is 0.5. Then the probability that when the coin is tossed twice, both of them are head is 0.5∧2=0.25.
/ R" T8 c/ r' W$ o　　Probability that a roll of a six-sided die land with face 1 is 1/6. Then the probability that 1 will turn up three times in a row is (1/6)∧3.　　Remember:
　　Note that probability of the event happening does not change from trial to trial.
  L3 H: m; W$ V4 Q" s: L0 g　　由于美国数学基础教育的难度增加导致数学考试越来越难，但新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。