Question

anagrama da palavra churrasco

Answer 1

Churrasco -> 9 letras, "c" repete duas vezes, "r" repete duas vezes. -> (9!)÷(2!*2!) = (9*8*7*6*5*4*3*2*1)÷(2*1*2*1) = 90720 anagramas

Answer 2

$\sf{\underbrace{CHURRASCO}_{P_9^{2,2}}=\dfrac{9!}{2!\cdot2!}}\\\sf{\dfrac{9\cdot8\cdot7\cdot6\cdot5\cdot \diagup\!\!\!\!4\cdot3\cdot \diagup\!\!\!\!2!}{\diagup\!\!\!\!2!\cdot \diagup\!\!\!\!2}=90720}$