Q. 12 A4.3( 7 Votes )

For any two sets

Answer :

To show: AB


x A


x ϵ A and A U


x ϵ A


x ϵ (A’ B) [ U = A’ B]


x ϵ A’ or x ϵ B


But, x A’,


x ϵ B


Thus, x ϵ A x ϵ B


This is true for all x ϵ A


A B


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