Q16 of 162 Page 1

Mark the correct alternative in the following:

If A and B are two disjoint sets, then n is equal to


Here, A and B are two disjoint sets.


⇒A⋂B=ϕ


⇒n(A⋂B)=0


n(A⋃B)=n(A)+n(B)-n(A⋂B)


=n(A)+n(B)-0


=n(A)+n(B)

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