#### notes

n(A ∪ B)= n(A)+ n(B)- n(A ∩ B)**Practical Problems on Union and Intersection of Three Sets**

n(A ∪ B ∪ C)= n(A) +n(B)+ n(C)- n(A ∩ B)- n(B ∩ C)- n(C ∩ A)+ n(A ∩ B ∩ C)

#### Shaalaa.com | Practical Problems on Union and Intersection of Sets

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