PLUS MATHS QUESTIONS AND ANSWERS

  Chapter 1
                     SETS

SETS AND REPRESENTATIONS

Set:- A well defined  collection  of distinct objects

Representation:- i)Roster( Tubular)
                               ii) set-builder form
                               iii)venn-diagram

Types of sets:-

  1. Empty or null set:-set containing no                elements ,{  }
  2.singleton set:- set containing a single                 element
  3.Finite set:- set containing no element or a        a definite number of elements
  4.infinite set:-set containing infinite                     number of  elements
  5.Equivalent sets:-sets containing same             number of elements
  6.Equal set:-sets containing exactly the               same elements
  7.subset:-A c B If every element of set A os         also an element of set B
  8.superset:- B is a super set of A if A c B
  9.Proper subset :- A c B and A not equal to B
10.Improper  subsets :- null set and the                 given set itself
11.Power set:- the collection of all subjects           of  set A, denoted as P (A)
12.Univerasal set:- the superset of all subsets
     Under discussion

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