Question

If U = {1,2,3,4,5,6,7,8,9} A={2,3,4,7} B={7, 8,39} Find (B')'​

Answer 1

Answer:

{7,8}

Explanation:

For ( B') '

First we solve B' i.e.

B'=U-B={1,2,3,4,5,6,7,8,9} - {7,8,39}={1,2,3,4,5,6,9}

Now

(B') ' =U-B' ={1,2,3,4,5,6,7,8,9} - {1,2,3,4,5,6,9}={7,8}