N Choose K Calculator. The N Choose K calculator calculates the choose, or binomial coefficient, function. The function is defined by nCk=n!/ (k! (n-k)!). Enter n and k below, and press calculate. .

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Combination Calculator (nCr, nPr)

Here we select k element groups from n elements, regardless of the order, and the elements can be repeated. k is logically greater than n (otherwise, we would get ordinary combinations).

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