Permutation Calculator
Calculate permutations (nPr) — the number of ways to arrange r items from n. Displays the formula and handles large numbers.
How to Use
Enter Values
Enter n and r values
Calculate
Permutation is calculated automatically
Check Results
Check result and formula
Features
Instant Calculation
Calculate permutation in real-time
Formula Display
Show nPr = n!/(n-r)! calculation steps
Large Numbers
Supports large values with BigInt
FAQ
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