Question

If A = (3, 6, 9, 12, 15. 18. 21). B = 4, 8, 12, 16, 20). then check whether AUB=BUA
and A-B=B-A.​

Answer 1

Answer:

Step-by-step explanation:

AUB = {3,4,6,8,9,12,15,16,18,20,21}

BUA = AUB both are same

A-B = { 3,6,9,15,18,21}

B-A = { 4,8,16,20}

Answer 2

Answer:

Step by step explanation