Subgroup of a group | Improper and Proper Subgroup| one step and two step test for a Subgroup

In this lecture you will what is subgroup . You will also learn two types of subgroup 1) Trivial or improper subgroup 2) non trivial or proper subgroup. It's examples . You will also learn one step test and 2 step test for Subgroup. I hope so this lecture is really helpful for you. So subscriber my channel Smart calculation like and comment on it. Thank you ☺️

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