Permutation
An ordered arrangement of elements — the number of permutations of n items taken r at a time is n!/(n-r)!.
Technical Detail
Permutation is applied in computing through numerical algorithms that balance precision, performance, and memory. JavaScript uses 64-bit IEEE 754 floating-point for all numbers, providing ~15-17 significant decimal digits. For exact arithmetic (financial, cryptographic), BigInt or fixed-point libraries are required. Browser-based calculators implement permutation using the same floating-point engine, making awareness of precision limitations important for correct results.
Example
``` Permutation calculation: Input: value = 42 Apply permutation: result = f(42) Output: result ```
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