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			I used to.. took a second major in math in college.  I ignored all those nasty applications in favor of abstract algebra, real analysis, number theory, etc. 
 
Now I'd be completely lost at anything more than simple algebra, though I like to think I could relearn it all if I applied myself.  (I expect those who were athletes in their youth feel the same way about being out of shape.)
		 
		
		
		
		
		
		
		
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