যদি A = {1, 2, 3, 4} এবং B = {3, 4, 5, 6} হয়, তাহলে A - (A ∩ B) এর মান কত?
সমাধান
সঠিক উত্তর: Option D
A ∩ B = {3, 4}
A - (A ∩ B) = {1, 2, 3, 4} - {3, 4} = {1, 2}
A - B = {1, 2, 3, 4} - {3, 4, 5, 6} = {1, 2}
সুতরাং A - (A ∩ B) = A - B = {1, 2}
A - (A ∩ B) = {1, 2, 3, 4} - {3, 4} = {1, 2}
A - B = {1, 2, 3, 4} - {3, 4, 5, 6} = {1, 2}
সুতরাং A - (A ∩ B) = A - B = {1, 2}
