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October 12th, 2018, 03:34 AM  #1 
Senior Member Joined: Aug 2014 From: India Posts: 365 Thanks: 1  How to solve this beads problem?
In how many ways can 21 Different beads of the same color be stung on a necklace? Answer is 20!/2 
October 12th, 2018, 04:11 PM  #2 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 14,594 Thanks: 1038  

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