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January 27th, 2018, 08:51 AM  #1 
Member Joined: Sep 2011 Posts: 98 Thanks: 1  Congruence Class Proof
Hi, I have tried the question as attached. I am not sure if I am correct. Your help is greatly appreciated. Thanks in advance!

January 27th, 2018, 02:24 PM  #2 
Global Moderator Joined: May 2007 Posts: 6,627 Thanks: 622 
The attachment is almost unreadable.

January 27th, 2018, 03:32 PM  #3 
Senior Member Joined: Aug 2012 Posts: 2,076 Thanks: 593  Unreadable everywhere except on a set of measure zero? OP, if you light the paper evenly at a 45 degree angle on each side and make sure your image is in focus, you will be more likely to get useful advice. But at the very least shine ONE light on it, and make sure it's in focus. Code:  / \ / \ / 90 \ o o Last edited by Maschke; January 27th, 2018 at 03:56 PM. 

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class, congruence, proof 
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