🔥Exam में सीधे आता है | Modern Algebra l UPSC PYQ Solution | HK Subgroup का ऐसा Proof पहली बार !

Описание: 🔥Exam में सीधे आता है | Modern Algebra l UPSC Maths Optional 2025 PYQ Solution | HK Subgroup का ऐसा Proof पहली बार l By Soni Sir..

Q) If H and K are finite subgroups of a group and HK = {hk|h ∈ H, k ∈ K}, prove
that |HK| = |H||K| / |H ∩ K|
Asked By UPSC IFoS 2025 Mains Examination Maths Optional Paper -2 Modern Algebra For 08 Marks.

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इस वीडियो में Soni Sir ने समझाया है कि
|HK| = (|H||K|) / |H ∩ K|
को सबसे आसान तरीके से कैसे prove किया जाता है — वो भी exam-oriented तरीके से!

🎯 इस वीडियो में क्या सीखोगे?

✔️ HK Subgroup की perfect definition
✔️ Formula behind |HK| in the easiest language
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