Bank Math Master১টি পরীক্ষায় এসেছেপ্রশ্ন ৭If Set A = {1, 2, 3} and Set B = {1}, which of the following is true? কA - B = {2, 3}খ(A ∩ B) = {1, 2, 3}গA × B = {1, 2, 3}ঘA ∪ B = {1}উত্তর দেখুন