Permutation Calculator
Calculate permutations (nPr) - the number of ways to arrange r items from a set of n items. Order matters!
items
Total number of items to choose from
items
Number of items to arrange (r ≤ n)
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Permutation Result
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Permutation Visualization
Visual representation of arrangements
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Calculation Breakdown
Step-by-step permutation calculation
Permutations
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nPr
Total Items (n)
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n
Items to Arrange (r)
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r
Repetition
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Allowed?
Permutation Formulas
Key permutation concepts
Permutation Tips
Understanding permutations
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Mathematical Disclaimer: This permutation calculator uses standard combinatorial formulas. Order matters in permutations (unlike combinations). For nPr, r ≤ n is required.