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Show that the following four conditions are equivalent: (i) A⊂B (ii) A−B=Φ (ii) A∪B=B (iv) A∩B=A |
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Answer» Show that the following four conditions are equivalent: (i) A⊂B (ii) A−B=Φ (ii) A∪B=B (iv) A∩B=A |
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