Question

Quantos anagramas tem a palavra ÁLGEBRA?​

Answer 1

$\mathsf{\underbrace{ALGEBRA}_{P_7^2}=\dfrac{7!}{2!}}\\\mathsf{\dfrac{7\cdot6\cdot5\cdot4\cdot3\cdot \diagup\!\!\!\!2!}{\diagup\!\!\!\!2!}=2520}$