Q12 of 162 Page 1

Mark the correct alternative in the following:

Let be the universal set containing 700 elements. If A, B are sub-sets of such that n (A) = 200, n (B) = 300 and n=100. Then, n=


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


n(A⋃B)=n(A)+n(B)-n(A⋂B)


=200+300-100


=400


n(A'⋂B' )=n(U)∖n(A⋃B)


=700-400


=300

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