SETS

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Theory of Set was developed by German mathematician Georg Cantor.

Set is a well-defined collection of objects so that we can definitely decide whether a given object belongs to a given collection or not.e.g. Vowels in English language, Solution of a quadratic equation

Set is usually denoted by capital alphabets. Elements are denoted by small alphabets.Sets can be written in two ways :

1.  Roster form – e.g. {a,e,i,o,u}, {1,2,3,4}

2.  Set builder form – e.g. {x : x is a vowel}