Permutation And Combination Assignment Help | Permutation And Combination Homework Help

Permutation and Combination Assignment Homework help


Permutation is the rearrangement of elements or symbols into distinguishable sequences. It is the arrangement of number of elements by taking some or all of the elements together.


Combination is a selection of some or all of a number of different elements. It is an un-ordered collection of unique sizes. In a permutation the order of occurence of the elements or the arrangement is important but in combination the order of occurence of the objects is not important.

Permutation = nPr = n! / (n-r)!
Combination = nCr = nPr / r!
              n, r are non negative integers and r<=n.
              r is the size of each permutation.
              n is the size of the set from which elements are permuted.
              ! is the factorial operator.

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