My Math Forum Group order quick question

 Abstract Algebra Abstract Algebra Math Forum

 February 14th, 2018, 05:40 AM #1 Senior Member   Joined: Jan 2016 From: Blackpool Posts: 100 Thanks: 2 Group order quick question today my lecturer wrote: let G be a subgrup such that $G\in S_{4}$. Then |G|=24 How did he he know it was 24 straight away? Thanks.
 February 14th, 2018, 06:41 AM #2 Senior Member   Joined: Oct 2009 Posts: 733 Thanks: 246 You mean a subgroup of $S_4$? Those don't need to have order $24$ at all... Maybe he means $|S_4| = 24$. This is because in general, $|S_n| = n!$. This is a combinatorial argument. Thanks from Jaket1

 Tags group, order, question, quick

 Thread Tools Display Modes Linear Mode

 Similar Threads Thread Thread Starter Forum Replies Last Post GOAT Algebra 7 October 11th, 2014 09:51 AM philip Calculus 1 September 17th, 2013 08:31 AM daigo Algebra 1 May 17th, 2012 03:59 PM Kappie Abstract Algebra 0 April 22nd, 2012 02:52 PM

 Contact - Home - Forums - Cryptocurrency Forum - Top