Q. 124.5( 2 Votes )

Mark the correct

Answer :

Here, n(A)=200 , n(B)=300 , n(AB)=100,n(U)=700


n(AB)=n(A)+n(B)-n(AB)


=200+300-100


=400


n(A'B' )=n(U)n(AB)


=700-400


=300

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