Question

if A= {3 6 9 12 15 18 21} and B{4 8 12 16 20} and C={2 4 6 8 10 12 14 } Find (A-B )U (C-A)​

Answer 1

Answer:

a-b = 3,6,9,15,18,21

c-a =2,4,6,8,10,14

a-b union c-a = 2,3,4,6,8,9,10,14,15,18,21