Thread: Sets Help IV.

And please check these:

5) (A-B')' - C'
({1,2,3} - {2,3,5})' - C'
({1,5})' - C'
{0,2,3,4} - {0,1,3}
= {2,4}

6)
(A∩U)' - B
({1,2,3})' - B
{0,4,5} - {0,1,4}
= {5}

Are they correct?

Originally Posted by Alphard

And please check these:

5) (A-B')' - C'
({1,2,3} - {2,3,5})' - C'
({1,5})' - C'
{0,2,3,4} - {0,1,3}
= {2,4}

({1, 2, 3} - {0, 1, 4}')' - {2, 4, 5}'
({1, 2, 3} - {2, 3, 5})' - {0, 1, 3}
{1}' - {0, 1, 3}
{0, 2, 3, 4, 5} - {0, 1, 3}
{2, 4, 5}

Originally Posted by Alphard

6)
(A∩U)' - B
({1,2,3})' - B
{0,4,5} - {0,1,4}
= {5}

This is correct.

-Dan