Let `A={x : x in Z, 2 le x le 5}` and `B={x : x in Z, -2 le x lt 4}`. – InterviewSolution

InterviewSolution

1.	Let `A={x : x in Z, 2 le x le 5}` and `B={x : x in Z, -2 le x lt 4}`. Find the following : (i) `n(A uu B)` (ii) `n(A nn B)` (iii) `n(A-B)` (iv) `n(B-A)`
Answer» Correct Answer - `8, 2, 2, 4` `A={2, 3, 4, 5}` `B={-2, -1, 0, 1, 2, 3}` `A uu B={-2, -1, 0, 1, 2, 3, 4, 5}` `implies n (A uu B)=8` `A nn B={2, 3}implies n (A nn B)=2` `A-B={4, 5}implies n(A-B)=2` `B-A={-2, -1, 0, 1}` `n(B-A)=4`

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