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How does the Combinations with Replacement Calculator work?
Free Combinations with Replacement Calculator - Calculates the following:
How many combinations can we have from a sample of r elements from a set of n distinct objects where order does matter and replacements are not allowed?
This calculator has 2 inputs.

What 1 formula is used for the Combinations with Replacement Calculator?

CR(n,r) = (n + r - 1)!/r! (n - 1)!

For more math formulas, check out our Formula Dossier
What 3 concepts are covered in the Combinations with Replacement Calculator?
combination
a mathematical technique that determines the number of possible arrangements in a collection of items where the order of the selection does not matter
nPr = n!/r!(n - r)!
combinations with replacement
factorial
The product of an integer and all the integers below it



Combinations with Replacement Calculator Video

Combinations with Replacement Calculator Video