Question

if A = {3, 6,9,12,15,18,21} B = {4, 8,12,16,20} C = {2, 4,6,8,10,12,14,16}D = {5, 10,15,20} find A -B, A-C, A-D, B-A, C-A, D-A, B-C, B-D​

Answer 1

Answer:

you can use calculator in such situations...