Q. 15.0( 10 Votes )

For any two sets

Answer :

To show, A’ – B’ = B – A


We need to show


A’ – B’ B – A


B – A A’ – B’


Let, x ϵ A’ – B.’


x ϵ A’ and x B.’


x A and x ϵ B


x ϵ B – A


It is true for all x x ϵ A’ – B’


A’ – B’ = B – A


Hence Proved.


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