October 29th, 2013, 02:50 AM  #1 
Senior Member Joined: Feb 2013 Posts: 153 Thanks: 0  Group
Hi. Could we have two equal elements in one group, or every two elements must be different? 
October 29th, 2013, 03:30 AM  #2  
Math Team Joined: Mar 2012 From: India, West Bengal Posts: 3,871 Thanks: 86 Math Focus: Number Theory  Re: Group Quote:
 

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