Sets and Venns

Sets and Venns

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Finite and Infinite Sets

  • Finite= a set with a finite number of elements
  • Infinite= have an infnite number of elements
  • n(A)= used to represent the number of elements in set A
  • A={xIxeZ, -2<x<2} the set of all X such that X is an interger between -2 and 2 not including -2 and 2.
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B C A is a A circle with B inside it

B (intersection) A is the overlap of B and A

AUB= both circles and the overlap

A intersection B=o  is 2 separate circles neither are highlighted

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