Q. 12 B3.8( 5 Votes )

For any two sets

Answer :

We have B’ A’


To Show: A B


Let, x ϵ A


x A’ [ A A’ = ϕ ]


x B’ [ B’ A’ ]


x ϵ B [ B B’ = ϕ]


Thus, x ϵ A x ϵ B


This is true for all x ϵ A


A B.


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