It is a mathematical techniquethat determines the number of passible arrangements in a collection of items where the order of the selection does not matter?
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It is a mathematical techniquethat determines the number of passible arrangements in a collection of items where the order of the selection does not matter?
Permutation is a mathematical technique used to determine the number of possible arrangements of
objects as a whole or in smaller groups of 
objects where the order of arrangements is important.
Combination is a mathematical technique that gives the number of possible selections of size
that can be made from 
objects. The order of selection is not important.