Solved Question Paper 2021 (2017 Syllabus) Mathematics for Economist
Answer: A set is a collection of well-defined and distinct objects. The theory of set was developed by German mathematician Georg Cantor. The objects in a set are called the elements or the members of the set. The name of the set is written in upper case and the elements of the set are written in lower case. If x is an element of a set A , we say that x belongs to A or is a member of A , and is expressed symbolically as If y is not a member of A , then this is symbolically denoted as Let V be the set of all vowels. Then, V is written as Set Operations: Let A and B be subsets of the universal set U . 1. Union of Sets: The union of A and B , denoted by , is the set of all elements x in U such that is either in A or in B . 2. Intersection of Sets: The Intersection of A and B , denoted by , is the set of all elements x in U such that is in both A and B . 3. Difference of Sets: The Difference of B minus A , denoted by...