Question

A universal set contains only sets A and B. If A∩B = Ø and A and B are not the empty set, then all of the following are true except

A. A and B are disjoint
B. A is equal to B complement
C. A∪B={}
D. A is not a subset of B
?

Answer 1

A and B have to be disjoint if they have nothing in common.

Answer 2

thanks again

Answer 3

you're welcome

Answer 4

all of them are true except C

Answer 5

oh my bad, I read it wrong lol