
#1
Jan113, 12:24 AM

P: 2

what is the permutation?
and like what example? anyone knows? 



#2
Jan113, 07:50 AM

Math
Emeritus
Sci Advisor
Thanks
PF Gold
P: 38,902

Do you mean "what is a permutation"? A permutation of a given list is simply a rearrangement of the list. For example, if the original list is "abc" then permutations are "acb", "bac", "bca", "cab", "cba", and, for completeness, we include the orignal list, "abc" as a permutation.




#3
Jan113, 08:32 AM

P: 2

i see,
so its just rearrange the list into random right? 



#4
Jan113, 09:20 AM

HW Helper
P: 6,189

permutation meaning and example
Formally, a permutation is a 11 map of a set onto itself.




#5
Jan113, 09:33 AM

PF Gold
P: 5,720

For combinations, on the other hand, order does not matter, so the combinations of abc are abc OR bca OR cab, etc  but they are all counted as the same thing. 



#6
Jan1113, 04:36 AM

P: 1

we can define permutation as
1.NUMBER OF ORDERED SELECTION OF "K" OBJECTS OUT OF "N" DISTINCT OBJECTS WITHOUT REPETITION.OR.; 2.ORDERED SAMPLING OF K OBJECTS OUT OF N DISTINCT OBJECTS WITHOUT REPLACEMENT.OR 3.NUMBER OF PERMUTATION(ORDERED SAMPLING)OF K OBJECTS OUT OF N DISTINCT OBJECTS WITHOUT REPETATION... 


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