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A and b are two sets,then the condition that they are to be disjoint sets,is |
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Answer» Step-by-step explanation: A and B are two DISJOINT sets. ∴ A∩B=ϕ ⟹ N(A∩B)=0 Since, n(A∪B)=n(A)+n(B)−n(A∩B) =n(A)+n(B)−0=n(A)+n(B) HENCE, n(A∪B)=n(A)+n(B) |
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