Frequently Asked Questions
What is permutation with repetition?
Counting the number of ordered arrangements when each position can be any of n items independently. Formula: n^r.
Difference from permutation without repetition?
Without repetition uses each item at most once (n!/(n−r)!). With repetition allows reuse, giving n^r - always at least as large.
What about combinations?
Combinations ignore order. nCr without repetition; nCr+r-1 with repetition. This calculator covers arrangements where order matters.
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Important Disclaimer: Estimates for informational purposes only.
This calculator provides estimates for informational purposes only. Results are based on assumptions and may not reflect actual outcomes. Consult qualified professionals in relevant fields before making important decisions based on these results.