At least one repetition permutations and combinations formula
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dont know sorry...............
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Combination = nCr = nPr/n!
When not related to Permutation,
Combination= nCr = n!/(n−r)!r!
Here,
n, r are non negative integers
r is the size of each permutation.
n is the size of the set from which elements are permuted.
! is the factorial operator.
When not related to Permutation,
Combination= nCr = n!/(n−r)!r!
Here,
n, r are non negative integers
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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