Question

if A={1,3,4,5,6,7}; B={2,3,5,7,8}
find A-(AnB) ​

Answer 1

Answer:

D

{2, 4, 6, 8} and {1, 3, 5, 7}

A={1,2,3,4,5,6,7,8}

Very clearly A∩B={1,3,5,7}

A−B is nothing but A−A∩B

A−B={2,4,6,8}

Of course option D is the correct answer