Question

IfA={5,6,7}B={6,7,8,9} find A-(A-B) and A
ununion B. What is your observation?​

Answer 1

ANSWER

{6, 7}=A-(A-B)

Step-by-step explanation:

=A-[{5, 6,7}-{6, 7,8,9}]

={6, 7}

A UNION B

{5,6,7,8,9}