Permutations Calculator
Calculate the number of permutations (arrangements) of n items taken r at a time, with or without repetition.
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How to use this tool?
- 1 Enter the requested data in the fields above carefully.
- 2 Click the calculate button to process the information instantly.
- 3 Analyze the detailed result and the formula explanation presented below.
- 4 You can print, share, or even embed the calculator on your own site for free.
Unlike traditional static calculators, our tools adapt to specific user needs. They include detailed explanations of the formulas used, ensuring transparency in results. Furthermore, our design is focused on user experience, eliminating distractions and focusing on what really matters: your data and conclusions.
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Frequently Asked Questions
A permutation is an arrangement of items in a specific order. The number of permutations of n items taken r at a time is denoted as nPr.
Without repetition, each item can only be used once. With repetition, items can be reused. The formula for without repetition is n!/(n-r)!, and with repetition is n^r.
Without repetition, r cannot exceed n. With repetition, r can be greater than n because items can be repeated.
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