Question

A palavra Amarrada possui quantos anagramas (20 pontos)

Answer 1

$\sf{\underbrace{AMARRADA}_{P_8^{4,2}}=\dfrac{8!}{4!\cdot2!}}\\\sf{\dfrac{\diagup\!\!\!\! 8^4\cdot7\cdot6\cdot5\cdot\diagup\!\!\!\!4!}{\diagup\!\!\!\!4!\cdot\diagup\!\!\!\!2}=840}$