GRE数学考试重要考点知识-查字典英语网
搜索1
所在位置: 查字典英语网 >留学英语 > GRE > GRE数学 > GRE数学考试重要考点知识

GRE数学考试重要考点知识

发布时间:2016-03-02  编辑:查字典英语网小编

  本文为大家准备了GRE数学考试重要考点知识,便于考生GRE考试备考。

  Set

  A set is a collection of objects or things. Each object in a set a member or element of that set.Size of a set is the number of members in the set.

  Example:

  The set of even numbers between 2 and 10 is of size 5:{2,4,6,8,10}.

  The set of primes between 2 and 10 is of size 4:{2,3,5,7}.

  Remember:

  Each member of set A belongs to A or is in the set A.

  A set can not have repeating member:{1,3,1,2}is not a set.

  Rearranging the order of the members does not change the set:{1,2,3}is same as{3,2,1}.

  Combinations

  Number of ways we can select n objects from a group of m distinct objects is m!/!).

  Example:

  Number of possible ways to pick 4 oscar nominations from a list of 50 movies is 50!/!)=50!/=50494847/24=230300.

  Remember:

  This does not apply if there are identical objects.

  Permutation of Objects

  The number of ways n distinct objects can be ordered is n.

  Example:

  Number of ways 6 people can from a queue is 6.

  Number of ways 5 different cars can be parked in 5 parking spaces is 5.

  Remember:

  This does not apply if there are identical objects or ordering does not matter.

  以上是小编为大家整理的新GRE数学考试重要考点知识,希望考生对以上内容适当复习,能取得好的GRE考试成绩!

  

  

点击显示

推荐文章
猜你喜欢
附近的人在看
推荐阅读
拓展阅读
  • 大家都在看
  • 小编推荐
  • 猜你喜欢
  •