Let G be a group and H, K ≤ G. Prove that H ∩ K and H ∪ K are subgroups of G Abstract Algebra

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answerhappygod
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Let G be a group and H, K ≤ G. Prove that H ∩ K and H ∪ K are subgroups of G Abstract Algebra

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Let G be a group and H, K ≤ G. Prove that H ∩ K and H ∪ K aresubgroups of G
Abstract Algebra
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