April 2022

Venn Diagrams Venn Diagrams:- Earlier we have discussed twomethods to represent a set (i) Roster form and (ii) Set Builder form. The third method to represent a set is by diagrams or pictures called Venn-diagram (also called Venn-Euler diagrams) In this method universal set is represented by a rectangle and other sets are represented bycircles […]

Subsets:- Consider a set ‘A’ of all the boys in classeleventh and set ‘B’ of all the students ( Boys + Girls) in class eleventh. Itis clear that all the members of set ‘A’ are also members of set ‘B’ then wecan say that set ‘A’ is subset of set ‘B’ or set ‘A’ is