考前必读：2019年GRE考试数学考点1

想要在考试中获得好成绩，就要在平时多花时间去复习，对于数学考试，我们更是需要时间去研究解题方法和思路，多加练习，今天小编就给大家带来了数学的考点，大家可以根据考点进行复习，在坦途网GRE考试频道还有很多相关的内容大家可以去看一看哦！

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!/(n!*(m-n)!). 　　Example: 　　Number of possible ways to pick 4 oscar nominations from a list of 50 movies is 50!/(4!*(50-4)!)=50!/(4!*46!)=50*49*48*47/24=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. 

今天的内容就给大家介绍到这里了，如果还想了解关于GRE考试模拟题等相关的内容，可以到坦途网看看哦，小编整理了很多素材和试题等着大家，今天的这些考点大家也要烂熟于心，这样在考试时我们才能灵活运用，最后小编也希望大家能考出自己理想的成绩！