1.

Let n(U)=700,n(A)=200,n(B)=300 and n(AnB)=100 then what is n(A'nB')?

Answer»

Answer:

Correct option is

C

300

Ans. (c).N(A∩B)=n(A∪B)

=n(U)−n(A∪B)

=n(u)−{n(A)+n(B)−n(A∩B)}

=700−{200+300−100}=300


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