I seriously haven't got a clue how to even start on this one. Help me?
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Let be a dihedral group of order . Then , so . Therefore is a subnormal series of with Abelian factors, so is solvable.
Originally Posted by Giraffro Let Correcting a possible minor typo: it must be . Tonio be a dihedral group of order . Then , so . Therefore is a subnormal series of with Abelian factors, so is solvable. .
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