Question

O valor da expressão é: (PRECISO DE SOMA CONCRETA)

Answer 1

Explicação passo-a-passo:

=> $\sf A_{6,3}$

$\sf A_{6,3}=\dfrac{6!}{(6-3)!}$

$\sf A_{6,3}=\dfrac{6!}{3!}$

$\sf A_{6,3}=\dfrac{6\cdot5\cdot4\cdot3!}{3!}$

$\sf A_{6,3}=6\cdot5\cdot4$

$\sf A_{6,3}=30\cdot4$

$\sf A_{6,3}=120$

=> $\sf P_5$

$\sf P_5=5!$

$\sf P_5=5\cdot4\cdot3\cdot2\cdot1$

$\sf P_5=20\cdot6$

$\sf P_5=120$

Logo:

$\sf A_{6,3}-P_5=120-120$

$\sf \red{A_{6,3}-P_5=0}$