Question

Arranjo Simples


Calcule: A 20,4 =

Answer 1

Resposta:

Explicação passo a passo:

A₂₀,₄ = ?

Arranjo simples

$A_{n,p}=\frac{n!}{(n-p)!} \\\\\\A_{20,4}=\frac{20!}{(20-4)!} \\\\A_{20,4}=\frac{20!}{16!} \\\\A_{20,4}=\frac{20*19*18*17*16!}{16!} \\\\A_{20,4}=20*19*18*17\\\\A_{20,4}=116280$