CalcCalculadora Permutacoes
Last updated: 2026-08-24
Calculadora Permutacoes — Calcule P(n,k) = n! / (n-k)!. Exemplo: How many ways to arrange 3 books from a shelf of 5? = P(5,3) = 60. Calculadora gratuita e precisa, sem registo.
Inputs
Result
Enter values and press Calculate
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How to use it
- Verificar que r ≤ n
- Calcular o factorial de n
- Calcular o factorial de (n-r)
- Dividir n! entre (n-r)!
Common mistakes
- ⚠️ Usar r mayor que n
- ⚠️ Confundir permutaciones com combinaciones
- ⚠️ Valores negativos
Worked example
Calcular permutaciones posibles
Las permutaciones cuentan arreglos onde o orden SÍ importa.
Input guide
| Field | Typical range |
|---|---|
| r | 0-170 |
| n | 0-170 |