新GRE数学重要考点:并集和交集

所属专题:GRE数学重要考点  来源:互联网    要点:GRE考试  
编辑点评: 想要攻克新GRE数学,一定要掌握好数学的基础知识点,还要识记有关新GRE数学的词汇。对于新GRE数学中的一系列重要考点,小编都将进行详细分析。今天为大家整理的是关于Intersection of Sets的内容。

攻克新GRE数学的重要知识点,今天小编为大家带来的是有关Intersection of Sets的相关内容。

Intersection of Sets

Intersection of two sets is another set with only the members that are in both sets. If the two sets do not share any common member, the intersection is the empty set with no member.

Example:

Intersection of {1,2,3} and {2,3,5} is the set {2,3}.

Intersection of the set with all primes and the set with all even numbers is the set {2} since only 2 is both even and prime.

Intersection of {1,2,3} and {4,5,6} is the empty set {}.

Remember:

Intersection contains only the common members.

Two sets are disjoint if they have no member in common, that is they have an empty intersection.

Union of Sets

Union of two sets is another set with all the members from both sets.

Example:

Union of {2,3,5} and {1,3,4} is the set {1,2,3,4,5}.

Union of {1,2,1} and {1,2} is the set {1,2,1}.

Remember:

The common members do not repeat in the union.

>>点击查看GRE数学重要考点专题,阅读更多相关文章!

最新2018GRE考试信息由沪江留学网提供。

请输入错误的描述和修改建议,建议采纳后可获得50沪元。

错误的描述:

修改的建议: