A = {1, 2}, B = {3, 4} এবং C = {5, 6} হলে n(A ∪ B ∪ C) কত?

প্রশ্ন: A = {1, 2}, B = {3, 4} এবং C = {5, 6} হলে n(A ∪ B ∪ C) কত?

সমাধান:
A = {1, 2}
B = {3, 4}
C = {5, 6}

A ∪ B = {1, 2} ∪ {3, 4}
= {1, 2, 3, 4}

(A ∪ B) ∪ C = {1, 2, 3, 4} ∪ {5, 6}
= {1, 2, 3, 4, 5 , 6}
n(A ∪ B ∪ C) দ্বারা সেট (A ∪ B ∪ C) এর উপাদান সংখ্যা বুঝায়
n(A ∪ B ∪ C) = 6