Question

if A={1,2,3} B= nullset then AuB

Answer 1

Answer:

(1,2,3)

Step-by-step explanation:

because it's AuB means the combination of set A and B and repeated numbers should be taken one time

Answer 2

:

If B=empty set and A has its members 1,2 and 3

So the union of an empry set and any other set has all the members of A

So AuB={1,2,3}