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If A, B, C, and D are independent events. Prove that AUB and C-D are independent. If A, B, C, and D are independent

If A, B, C, and D are independent events. Prove that AUB and C-D are independent. If A, B, C, and D are independent events. Prove that AUB and C-D are independent. If A, B, C, and D are independent events. Prove that AUB and C-D are independent.

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