If n(A)=10, n(B)=30,n(C)=50 and if set A, B, C are pairwise disjoint then which of the following is correct?

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answerhappygod
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If n(A)=10, n(B)=30,n(C)=50 and if set A, B, C are pairwise disjoint then which of the following is correct?

Post by answerhappygod »

a) n(A U B)=0
b) n(B U C)=0
c) n(A U B U C)=90
d) All of the mentioned
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