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March 5th, 2012, 05:09 AM  #1 
Member Joined: Feb 2012 Posts: 31 Thanks: 0  Set theory MOD Help.
If E = { n e Z:1 =< n =< 12} A={n e Z:12 mod n=0} B={n e E: n is a prime number} C={n e Z: n mod 1=2} Enumerate the elements of A U B ______ (A U C) C  A Could someone explain in steps how to solve this question? 
March 5th, 2012, 05:56 AM  #2 
Math Team Joined: Nov 2010 From: Greece, Thessaloniki Posts: 1,990 Thanks: 133 Math Focus: pre pre pre pre pre pre pre pre pre pre pre pre calculus  Re: Set theory MOD Help. [color=#000000]The first thing you have to do is to specify the elements of each set. I made some changes because I think that there are problems in the wording of the exercise. [/color] 
March 5th, 2012, 07:29 AM  #3 
Global Moderator Joined: Dec 2006 Posts: 21,105 Thanks: 2324 
To typeset an arithmetic congruence using the latex tag, please use \pmod as illustrated below: (based on x\equiv y\,\pmod n). 
March 5th, 2012, 08:31 AM  #4 
Member Joined: Feb 2012 Posts: 31 Thanks: 0  Re: Set theory MOD Help.
Thanks for all the help.

March 6th, 2012, 12:52 PM  #5  
Math Team Joined: Nov 2010 From: Greece, Thessaloniki Posts: 1,990 Thanks: 133 Math Focus: pre pre pre pre pre pre pre pre pre pre pre pre calculus  Re: Quote:
[color=#000000]Ok I corrected it, I tried to use \mod but it didn't work here![/color]  

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