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					Originally Posted by  Slava
					 
				 
				I don’t really understand how the percentages are calculated? For example why does PSG have an 18.8% chance of facing Atletico, but only 18.4% to face Schalke? I must be missing something. 
			
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According to the chart it is done by running a simulation 50,000 times. It is not a calculated probability, more like a summary of test results.