A = {1, 2, 3}, B = {2, 4, 6} এবং C = {1, 4, 7} হলে, (A∪B)∪C = কত?

প্রশ্ন: A = {1, 2, 3}, B = {2, 4, 6} এবং C = {1, 4, 7} হলে, (A∪B)∪C = কত?

সমাধান:
(A∪B) = {1, 2, 3} ∪ {2, 4, 6} = {1, 2, 3, 4, 6}

(A∪B) ∪ C = {1, 2, 3, 4, 6} ∪ {1, 4, 7} = {1, 2, 3, 4, 6, 7}