Question
If A = (-7, 3], B = [2, 6] and C = [4, 9], then find

B’ ∩ C’

Answer

B’ = (-∞, 2) ∪ (6, ∞) C’ = (-∞, 4) ∪ (9, ∞) ∴ B’ ∩ C’ = (-∞, 2) ∪ (9, ∞)

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