Sunday, July 26, 2009

Can anyone list all possible combinations of a,b,c,d,e taken 5 at a time?

repittions okay; no e starts

Can anyone list all possible combinations of a,b,c,d,e taken 5 at a time?
Since the e is not allowed to start there would be a total of


5! / 5 = 24 combinations.


What do you mean repititions OK? If you mean that you can have something like aaabb, then the total number of possibilities =


4*5^4 = 2500.


I'm not going to list them.
Reply:4*5*5*5*5 = 2,500
Reply:There are 2500 different possibilities. Since repetitions are okay, there are 4 possibilities for the first slot and 5 for the final four. so that is 5^4*4=2500


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