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Mathematics, 03.10.2019 04:00 thepantsgirl

Let a, b, c and d be sets. prove that a \ b and c \ d are disjoint if and only if a ∩ c ⊆ b ∪ d

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Let a, b, c and d be sets. prove that a \ b and c \ d are disjoint if and only if a ∩ c ⊆ b ∪ d...

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