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Sets A and B have 3 and 6 elaments respectively. What can be theminimum number of elements in `A uu B`A. 3B. 6C. 9D. 18

Answer» Correct Answer - B
Sets A and B ………….
`n(AuuB)= n(A)+n(B)-n(AnnB)`
`=3+6-n(AnnB)`
Since maximum number of elements in `AnnB = 3`
`:.` Minimum number of elements in `AuuB = 9-3=6`


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