Let A = {n : n ∈ ℤ and n² ≤ 4} and B = {x : x ∈ ℝ and x² − 3x + 2 = 0}. Then
AB ⊂ A and A ≠ B
BA and B are disjoint
CA = B
DA ⊂ B and A ≠ B
Answer & Solution
Correct answer: A. B ⊂ A and A ≠ B
A = {−2, −1, 0, 1, 2} and B = {1, 2}. Every element of B is in A, but A has elements (−2, −1, 0) not in B, so B ⊂ A and A ≠ B.
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