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


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