Question

prove that A-(A-B) is a sub set of B

Answer 1

hi friend,

let A={1,2,3,4}

B={3,4,5,6}

now A-B={1,2,3,4}-{3,4,5,6}

={1,2}

now, A-(A-B)={1,2,3,4}-{1,2}
={3,4}

which is a subset of B

I hope this will help u ;)