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For any two sets A and B, show that the following statements are equivalent : (i) A⊂B (ii) A−B=ϕ (iii) A∪B=B (iv) A∩B=A. |
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Answer» For any two sets A and B, show that the following statements are equivalent : (i) A⊂B (ii) A−B=ϕ (iii) A∪B=B (iv) A∩B=A. |
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