Respostas

2014-05-06T16:22:50-03:00
Letra A   =>An,p=6!/6-4  = 6.5.4/2.1= 360/2= 180

Letra B =>8!/8-5= 8!/3! =>8.7.6.5.4/3.2.1=> 6.720/6=1.120