sub-set-venn-diagram

SET THEORY

Set is a collection of well defined and distinct objects.

POINTS TO KNOW

  • n(AᴜB) is the number of elements present in either of the sets A or B.
  • n(A∩B) is the number of elements present in both the sets A and B.

FORMULAS

For two sets A and B

  • n(AᴜB) = n(A) + (n(B) – n(A∩B)

For three sets A, B and C

  • n(AᴜBᴜC) = n(A) + n(B) + n(C) – n(A∩B) – n(B∩C) – n(C∩A) + n(A∩B∩C)

 

SOME VEEN DI AGRAM REPRESENTATIONS:

 In above diagram  set  A is the subset of set B

 

 

 

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