A Set is a well defined collection of object of distinct object. Ex--> Pappu, 1, 2, X,

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A Set is a well defined collection of object of distinct object. Ex--> Pappu, 1, 2, X, by Mind Map: A Set is a well defined collection of object of distinct object. Ex--> Pappu, 1, 2, X,

1. SET

2. Arrangement of element in Set does not matter. Ex--> {1,2,3} = {2,3,1}

3. REPRESENTATION OF SET i) Roster or Tabular form A = {1,2,3,4,5 } इसमें हैं किसी भी element को कोस्टक के अंदर बंद कर देते हैं जैसा ऊपर दिया गया है ii) Set builder or Property form A={ X: X∈N, 1≤X≤5 इसमें X कोई element है और X natural number है और x 1से बड़ी या बराबर और 5से छोटी या बराबर यही आएगा {1,2,3,4,5}

4. IMPORTANT SYMBOLS ∈ --- belongs to : ----- Such that ∀----- for all , ---- And ∃ ---- there exist

5. Types of set FINITE INFINITE No of element No of are finite element are infinite Ex-> {1,2} Ex. { 1,2....} Cardinal no is define for finite sets.

6. NULL SET Symbol or { } VOID SET or EMPTY SET there is no element in this set इस सेट के अंदर कोई भी element नहीं होता है