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Permutation meaning and example

by loserone+_+
Tags: math, mathematic, mathematics, permutation
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loserone+_+
#1
Jan1-13, 12:24 AM
P: 2
what is the permutation?
and like what example?
anyone knows?
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#2
Jan1-13, 07:50 AM
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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.
loserone+_+
#3
Jan1-13, 08:32 AM
P: 2
i see,
so its just rearrange the list into random right?

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#4
Jan1-13, 09:20 AM
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Permutation meaning and example

Formally, a permutation is a 1-1 map of a set onto itself.
phinds
#5
Jan1-13, 09:33 AM
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Quote Quote by loserone+_+ View Post
i see,
so its just rearrange the list into random right?
No, it is NOT random. It is a set of all possible arrangements.

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.
shubham sanjay
#6
Jan11-13, 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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