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Set Theory Part-1 (in Hindi)
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Important for DNA, AA, Airforce, ssr,cds

Ankit Awasthi
teaching is my hobby, I am a you tuber I have 7 years teaching experience

U
Unacademy user
Sir u r contain are not sufficient 4 main
Ma
Hindi me video banaiye
please sir aap dimorgan's law ki ek or video provide kar dijiye
RK
bahut aacha sir paper ke according padhaiye
  1. SET THEORY


  2. Sets A well-defined collection of objects - objects in a set are called the -we denote sets by capital letters is called a set members or elements


  3. Sets are Two Types 1) Roaster or Tabular Form 2) Set-builder Form


  4. Roaster or Tabular Form *- In the roster form, we all the members of set within braces f1 and separate them by commas Example- A-Set of all odd numbers less than 10 A 1,3,5,7,9)


  5. Set -Builder Form In the set-bulider form, we list the property or properties satisfhed by all the elements of the set. Exanmple-A-(1,3,5,7,9 A={x:x-ve integer less than 10}


  6. Example A-12,3,5,7,11... . tabular form A-(x:x is a prime number less than 13)


  7. Types of sets 1) Empty or null or void set A set containing no element at all is called the empty set, denoted by t) Example A-(x:x is Natural number and 2<x<3 - th


  8. Singleton set A set containing exactly one element is called a singleton set 2) Bx:x is an even prime number


  9. Finite set:- When elements have countable Example 1) A-(2,4,6,8,10,12,1416 2) B={ x:x is a letter of English alphabet)


  10. infinite set- A set which is not finite is called an infinite set Example:- 1) N 1,2,3,5,6,7,8,9,10 2) B={ x:x multiple of 5}