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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

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

  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}