Math, asked by jananisj962, 5 months ago

1. If H is a subgroup of a group G of index 2. show that H is a normal subgroup of G.​

Answers

Answered by soumyak14
0

Step-by-step explanation:

here we have to take 2 seperate case

case 1

a€H and a€G

case 2

a doesn't belong to H and a€G

In both cases we prove H is a normal sub group of G

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