Question

Analise combinatória Calcule
a) 2.4! + 3.2! =

b) 6! + 5!=

Answer 1

$a) 2.4!+3.2! =2.4.3.2.1+3.2.1=48+6=54 \\ \\ b)6!+5!=6.5.4.3.2.1+5.4.3.2.1=720+120=840$