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May 5th, 2017, 05:30 PM  #1 
Member Joined: Oct 2016 From: Sverige Posts: 30 Thanks: 2  How many ways can you sort this?
I got 3 As and 2 Bs, how many ways can I sort this? AAABB AABAB ... Since switching an A with another A doesnt change the pattern, how many ways can I arrange these letters? 
May 5th, 2017, 05:58 PM  #2 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 10,477 Thanks: 693 
Same as: how many different 5digit numbers containing 3 1's and 2 2's? 
May 5th, 2017, 06:11 PM  #3  
Senior Member Joined: Sep 2015 From: Southern California, USA Posts: 1,412 Thanks: 716  Quote:
How many ways can you arrange 3 A's in 5 slots?  
May 5th, 2017, 07:33 PM  #4 
Newbie Joined: May 2017 From: phoenix, az Posts: 7 Thanks: 0 
10 different ways

May 5th, 2017, 08:22 PM  #5 
Senior Member Joined: Sep 2015 From: Southern California, USA Posts: 1,412 Thanks: 716  

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