(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

If H, K are subgroups of G, show that H intersect K is a subgroup of H

2. Relevant equations

I know that H intersect K is a subgroup of G; I proved this already but I'm wondering how H intersect K is a subgroup of H

3. The attempt at a solution

I'm quite sure this is true but my idea is based on set theoretic properties and one can't use such properties to apply on subgroups

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# Homework Help: Intersection of Groups

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